CN203071572U - Transformer circuit device - Google Patents
Transformer circuit device Download PDFInfo
- Publication number
- CN203071572U CN203071572U CN2011900005166U CN201190000516U CN203071572U CN 203071572 U CN203071572 U CN 203071572U CN 2011900005166 U CN2011900005166 U CN 2011900005166U CN 201190000516 U CN201190000516 U CN 201190000516U CN 203071572 U CN203071572 U CN 203071572U
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- Prior art keywords
- transistor
- terminal
- resistor
- transformer
- circuit
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- Expired - Fee Related
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model aims to provide a transformer circuit device comprising a first protection unit (116) which is integrated into a secondary circuit (104) of a transformer (100), connected in series with at least one capacitive element (112) and used for protecting at least one photoelectric unit (114) from a substantially-high secondary circuit current value caused by discharge of the at least one capacitive element (112). The first protection unit (116) includes at least one resistor (123, 124, 125), a first transistor (126) and a second transistor (122); each resistor is provided with a first terminal coupled to the capacitive element (112); the first transistor (126) is provided with a first terminal coupled to a second terminal of the at least one resistor (123, 124, 125), a second terminal coupled to the photoelectric unit (114) and a control terminal used for performing the control function; and the second transistor (122) is provided with a first terminal connected to the first terminal of the at least one resistor (123, 124, 125), a second terminal coupled to the control terminal of the first transistor (126) and a control terminal connected to the second terminal of the at least one resistor (123, 124, 125).
Description
Technical field
Several electrons equipment (for example dissimilar lighting apparatus) uses the transformer circuit electronic circuit of some types.
Background technology
Transformer is that the conductor by induction coupling is delivered to the equipment of another circuit (being secondary circuit) with electric energy from a circuit (being primary circuit), and the conductor that wherein should induction be coupled is the coil of transformer.The electric current of the variation in the elementary winding causes the magnetic flux of variation in magnetic core of transformer, and therefore passes through the magnetic field of the variation of secondary winding.The magnetic field of this variation causes the electromotive force (EMF) of variation, i.e. voltage in the secondary winding.
In many prior art execution modes, the voltage of secondary winding and power are very low and do not need big energy accumulator, i.e. electric capacity on secondary circuit.The number needs of the electronic equipment execution mode that increases in lighting apparatus for example will be utilized high in fact voltage and power at secondary circuit.This is with for the demand of the bigger energy accumulator on the secondary circuit (being electric capacity).This problem is the situation when load (as photovoltaic element) disconnects connection from circuit first under charged condition.When being connected to load on the circuit again, owing to come the charge discharge of self-capacitance, in circuit, there is current peak.This current peak may cause photovoltaic element to damage, and for example Light-Emitting Diode (LED) damages, thereby causes fault and other fringe costs in the circuit operation, because the LED that damages must be with new replacing.
And some prior art problems are that constant current equipment is relevant with secondary circuit.In normal running, need power measurement device and current measuring device, so that the voltage and current of sensing lead.The frequency response of voltage measurement must be fast, and the frequency response of electric current must be slow, because current measurement must partly not reacted waveform signal or the waveform signal that is caused by line voltage in the normal running of secondary circuit.In the prior art, dispose described voltage measurement by first amplifier, and dispose described current measurement by second amplifier.
In a word, in the power failure situation and/or current peak takes place in sensor application.Usually, when load (as photovoltaic element) in power failure situation for example or when being connected on the circuit again afterwards, there is current peak in the secondary circuit.Therefore, also need rapid response current measurement, cause photovoltaic element to damage to prevent current peak, for example Light-Emitting Diode (LED) damages, thereby causes fault and other fringe costs in the circuit operation, because the LED that damages must be with new replacing.A prior art scheme for this rapid response current measurement is to use the 3rd amplifier, it at first is expensive technical scheme, and the 3rd amplifier takies for the more location on the circuit board of other assemblies of assembling this amplifier and transformer in addition.
As example, the document of prior art has been described in patent application WO 2006/046207A1.During the powering on of LED, be directed to the electric current of LED by resistor, to reduce the voltage on the LED, prevent that level from causing the output of LED light to surpass and exporting with dim command signal corresponding LED light.Therefore, suppress the flicker of LED.But this resistor does not protect LED to avoid current peak
The utility model content
The purpose of this utility model is to realize a kind of transformer circuit device, wherein successfully and the risk of damaging with rational cost minimization photovoltaic element.This realizes that by a kind of like this transformer circuit device it comprises: transformer; Be positioned at the primary circuit on the primary side of this transformer; And be positioned at secondary circuit on the primary side of this transformer, this transformer is configured to electric energy is delivered to this secondary circuit from this primary circuit, this secondary circuit comprises: be used for realizing in this primary side the capacitive element of capacitive character feature, and at least one photovoltaic element that is used for carrying out photoelectric functional.This device comprises the secondary circuit that is integrated into transformer; first protected location that is connected in series with at least one capacitive element; the high in fact secondary current value that the discharge of avoiding this at least one capacitive element for the protection of described at least one photovoltaic element causes; this first protected location comprises at least one resistor with the first terminal that is coupled to this capacitive element; the first terminal with second terminal that is coupled to described at least one resistor; be coupled to the second terminal the first transistor of photovoltaic element; and transistor seconds, this transistor seconds has the first terminal of the first terminal that is connected at least one resistor; be coupled to second terminal of control terminal of the first transistor and the control terminal that is connected to second terminal of at least one resistor.
The utility model realizes that based on being used at least one capacitive element of capacitive character feature (being the energy memory function) is positioned at secondary circuit; and will be integrated into secondary circuit with first protected location that at least one capacitive element is connected in series; avoid the high in fact secondary circuit magnitude of voltage that the discharge of at least one capacitive element causes for the protection of at least one photovoltaic element in the secondary circuit, especially have described discharge in the situation when after for example in photoelectric circuit, replacing some assemblies with new assembly and/or after power failure, photovoltaic element being switched to transformer circuit.
Benefit of the present utility model be its realization that a kind of convenience and relatively low cost are provided with the protection transformer circuit primary side in photovoltaic element in order to avoid be damaged.
Description of drawings
Fig. 1 has provided the block diagram according to an illustrative embodiments of the present utility model.
Fig. 2 has provided the detailed example according to a preferred implementation of the present utility model.
Fig. 3 has provided the block diagram of second protective device.
Embodiment
In Fig. 1, provided the block diagram according to an illustrative embodiments of the present utility model.Transformer 100 is the equipment that electric energy is delivered to another circuit from a circuit by conductor N1, the N2 of induction coupling.Transformer circuit device among Fig. 1 comprises the secondary circuit 104 on the primary side of primary circuit 102 on the primary side of transformer 100 and transformer 100, and transformer is delivered to secondary circuit with electric energy from primary circuit.Square frame 106 in the primary circuit comprises the jockey for input voltage, and this input voltage is for example 230V and 50Hz alternating voltage.Square frame 106 in the primary circuit can also comprise at least one filter of carrying out electric filter operation (for example RFI (radio frequency interference) filtering) and for the rectifier that alternating current (AC) is converted to direct current (DC), but depend on the employed execution mode of the utility model, square frame 106 can also have different contents.
In addition, the device among Fig. 1 can be included in the feedback device 118 that is used for providing from primary side to primary side information between primary circuit 102 and the secondary circuit 104.This information can comprise for example voltage and/or the current information of secondary circuit 104, and wherein the photoelectricity coupling that for example can comprise by this feedback device 118 provides information to primary circuit.Primary circuit 102 can comprise anti-sharp electronic circuit 120, and it is for the information that the described information that provide is provided and utilizes reception in the operation of transformer circuit from secondary circuit 104 via feedback device 118.
Given above and relevant with Fig. 1 description also is applicable to Fig. 2, but has provided the detailed and exemplary circuitry figure according to preferred implementation of the present utility model in Fig. 2.Secondary circuit 104 comprises for the electric capacity 112 of realizing the capacitive character feature at secondary circuit 104.Integrated circuit 135 comprises amplifier, and it is operational amplifier preferably.First amplifier is that a part and second amplifier of current measurement electronic circuit 108 is parts of voltage measurement electronic circuit 110.Photovoltaic element 114 comprises at least three Light-Emitting Diodes (LED), compares with having single led situation, needs higher in essence voltage and performance number at secondary circuit 104.
First protected location 116 is connected in series at least one electric capacity 112 in order to protect at least one photovoltaic element 114 to avoid high secondary circuit voltage and/or current value.For example there is peak current in the discharge owing at least one electric capacity 112.Typical case to this is when photovoltaic element 114 is pulled to secondary circuit 104.
First protected location 116 comprises at least one resistor 125, the first transistor 126 and transistor seconds 127.First protected location can comprise a plurality of resistors, for example three resistors that are connected in parallel 123,124,125.Resistor 125 or the resistor 123,124 that is connected in parallel, 125 the first terminal are coupled to electric capacity 112, and resistor 125 or the resistor 123,124 that is connected in parallel, 125 second terminal are connected to the first terminal of the first transistor 126.Second terminal of the first transistor 126 is connected to photovoltaic element 114.The first terminal of transistor seconds 122 is connected to resistor 125 or the resistor 123,124 that is connected in parallel, 125 second terminal, and second terminal of transistor seconds 122 is connected to the control terminal of the first transistor 126.The control terminal of transistor seconds 122 is connected to resistor 125 or the resistor 123,124 that is connected in parallel, 125 second terminal.
Preferably, the first transistor 126 is field-effect transistor (FET), and the first terminal of the first transistor 126 is source electrodes of FET, and second terminal of the first transistor 126 is that the drain electrode of FET and the control terminal of the first transistor 126 are grids of FET.
Preferably, transistor seconds 122 is bipolar transistors, the first terminal of transistor seconds 122 is emitters of bipolar transistor, and second terminal of transistor seconds 122 is that the collector electrode of bipolar transistor and the control terminal of transistor seconds 122 are base stages of bipolar transistor.Therefore, the emitter of bipolar transistor 122 and the electrical potential difference between the base stage are corresponding to the voltage on the resistor 123,124,125.
Also the anode of diode 127 (preferably Zener diode) is connected to the control terminal of the first transistor 126.The negative electrode of diode 127 is connected to the first terminal of the first transistor 126.In the situation of FET, the anode of diode 127 is connected to the grid of FET and the negative electrode of diode 127 is connected to the source electrode of FET.Electric capacity 128 and diode 127 can be connected in parallel.
During normal running, when not excessive to the electric current of photovoltaic element 114, the voltage on the resistor 123,124,125 is still very low.The emitter of bipolar transistor 122 and the low potential difference between the base stage keep bipolar transistor 122 to be in non-conductive state.On the Zener diode 127 and therefore under these conditions, between the grid of FET 126 and source electrode, there is constant voltage.This constant voltage guarantees that FET 126 is in conduction state during normal running.
When the photovoltaic element 114 that for example replace to disconnect super-high-current may occur when finishing secondary circuit 104.May accumulate the significant quantity of electric charge at electric capacity 112 places and finish when this circuit is that this electric charge is discharged.May damage even as big as causing photovoltaic element 114 from the electric current of this discharge generation.Use first protected location 116, will be restricted to maximum safe current I at the electric current at photovoltaic element place
MaxAt this maximum safe current I
Max, the voltage on the resistor 123,124,125 is V
MaxEmitter and the electrical potential difference between the base stage of bipolar transistor 122 also equal V
MaxBy selecting suitable resistance value, V for resistor 123,124,125
MaxEnough greatly so that bipolar transistor 122 is conducting to conduction state.In other words, the discharge of electric capacity 122 produces the voltage that emitter-the base stage threshold voltage is bigger than bipolar transistor 122 in first protected location.Because this bipolar transistor is in conduction state, FET126 is adapted to linear operation (zone of saturation), thereby provides and I to photovoltaic element 114
MaxThe electric current of the substantial constant that equates.
Because current measurement must partly not reacted waveform signal or the waveform signal that is caused by line voltage in the normal running of secondary circuit, thereby the frequency response of voltage measurement must be fast and the frequency response of current measurement must be slowly, how the detailed execution mode that provides among Fig. 2 avoids the technical scheme that goes wrong therefrom if also providing.
In Fig. 3, provided the block diagram corresponding to this technical scheme, it comprise with about the similar part of the given part of Fig. 1.Comprise for the current measurement electronic circuit 108 of carrying out the current surveillance operation as secondary circuit given among Fig. 3 104.Secondary circuit 104 also comprises for for example carrying out the voltage measurement electronic circuit 110 that monitoring voltage is operated under the open-circuit condition.At least one photovoltaic element 114 on the secondary circuit 104 is carried out photoelectric functional, for example illumination or signaling.Photovoltaic element 114 comprises a Light-Emitting Diode (LED) or a plurality of Light-Emitting Diodes (LED) preferably.It is integrated that second protected location 111 is connected with at least one photovoltaic element 114, so that the protection photovoltaic element is avoided high in fact secondary current value signal.
Secondary circuit comprises for the current measurement electronic circuit 108 of carrying out the current surveillance operation, wherein the current measurement electronic circuit is configured to the frequency that is lower than 100Hz is in fact reacted, thereby described current measurement electronic circuit will not react for for example line voltage ripple frequency.This is by with the first terminal of current measurement device (as resistor) and photovoltaic element 114 series coupled and second terminal of current measurement device is connected to integrated circuit 135 realizes.Because the internal latency in the integrated circuit 135, current measurement electronic circuit 108 is measured average current and high frequency is not reacted.To offer anti-on the primary side via feedback device 118 from the feedback of current measurement electronic circuit 108 and swash electronic circuit 120.
Second protected location 111 is integrated into secondary circuit 104; second protected location 111 is connected in series with at least one photovoltaic element 114; so that the protection photovoltaic element is avoided high in fact value secondary current signal, this signal comprises that be the frequency higher to its frequency of reacting than current measurement electronics 108 by device.By this device, reached the realization of convenience and relatively low cost, damage in the primary side of transformer circuit to prevent photovoltaic element.
Second protected location by device for without delay high current value being reacted.Second protected location 111 that provides among Fig. 2 is over-current protecting units, and it comprises that the 3rd transistor 130 and at least one resistor 132,134 are to carry out the electric current restriction by described the 3rd transistor 130.At least one resistor 132,134 the first terminal are coupled to photovoltaic element 114.At least one resistor 132,134 second terminal are connected to integrated circuit 135.The control terminal of the 3rd transistor 130 is connected at least one resistor 132,134 the first terminal and the node between the photovoltaic element 114.The first terminal of the 3rd transistor 130 is connected at least one resistor 132,134 second terminal.Second terminal of the 3rd transistor 130 is coupled to feedback device 118.Between the 3rd transistor 130 and feedback device 118, can have other assemblies, but this assembly must not introduced any significant delay to the signal from the 3rd transistor 130 to feedback device 118.
Preferably, the 3rd transistor 130 is bipolar transistors, and this first terminal is the emitter of bipolar transistor, and the collector electrode that this second terminal is this bipolar transistor and this control terminal are the base stages of this bipolar transistor.
Be in the normal operating condition of the current phase that high current value signal is lower than destructiveness at the current value signal, second protected location 111 does not have influence on secondary circuit 104, and namely it is passive.Cause the high secondary circuit 104 current value signals of described destructiveness in for example conducting situation and/or in the situation that load changes fast.
By at least one resistor 132,134 current limit value is set and avoids high in fact (namely destructive) current value signal with protection photovoltaic element 114.At least one resistor 132,134 resistance are selected to emitter-base stage threshold voltage that the voltage that makes at least one resistor is lower than bipolar transistor 130 when electric current is lower than current limit value, keep bipolar transistor 130 to be in non-conductive state.When electric current surpassed current limit value, the voltage at least one resistor 132,134 was enough big so that bipolar transistor 130 is in conduction state.
When bipolar transistor 130 was in conduction state, it provided signal to feedback device 118, and feedback device 118 provides information to anti-sharp electronic circuit 120.Based on this information, instead swash electronic circuit 120 control transformers 100, thereby reduce the electric current on the primary side.Between second protected location 111 and feedback device 118, do not have delay, and therefore, second protected location 111 can respond high frequent current peaks rapidly.
Other transistor types (bipolarity, FET etc.) also can be used for carrying out the operation about protected location 111,116 described similar type; but for example in first protected location 116; the FET transistor is preferred selection; because first protected location, 116 circuit comprise the element of minimum number; and in addition, the FET transistor causes the loss of minimum number in this circuit.In addition, the distortion that can have an any type of protected location 111,116 circuit is to realize protected location 111,116 purpose or the part of purpose.
Though provided the utility model with specification with reference to the accompanying drawings, the utility model never is limited to those drawing and description, and the utility model is limited to the interior distortion of scope that claim allows.
Claims (14)
1. transformer circuit device comprises:
Transformer (100);
Be positioned at the primary circuit (102) on the primary side of described transformer; And
Be positioned at the secondary circuit (104) on the primary side of described transformer,
Described transformer (100) is configured to electric energy is delivered to described secondary circuit (104) from described primary circuit (102), and described secondary circuit (104) comprising:
Be used for realizing in described primary side at least one capacitive element (112) of capacitive character feature, and
Be used for carrying out at least one photovoltaic element (114) of photoelectric functional,
It is characterized in that; described device comprises first protected location (116) that is integrated into secondary circuit (104), is connected in series with described at least one capacitive element (112); avoid the high in fact secondary current value that the discharge of described at least one capacitive element (112) causes for the protection of described at least one photovoltaic element (114), described first protected location (116) comprising:
At least one resistor (123,124,125), it has the first terminal that is coupled to described capacitive element (112),
The first transistor (126), it has the first terminal of second terminal that is coupled to described at least one resistor (123,124,125) and second terminal that is coupled to described photovoltaic element (114), and
Transistor seconds (122), it has the first terminal of the described the first terminal that is connected to described at least one resistor (123,124,125), second terminal of control terminal that is coupled to described the first transistor (126) and the control terminal that is connected to described second terminal of described at least one resistor (123,124,125).
2. transformer circuit device as claimed in claim 1 is characterized in that, described transistor seconds (122) is bipolar transistor.
3. transformer circuit device as claimed in claim 2, it is characterized in that, the described the first terminal of described transistor seconds (122) is the emitter of described bipolar transistor, and collector electrode and described control terminal that described second terminal is described bipolar transistor are the base stages of described bipolar transistor.
4. transformer circuit device as claimed in claim 1 is characterized in that, described the first transistor (126) is field-effect transistor.
5. transformer circuit device as claimed in claim 4, it is characterized in that, the described the first terminal of described the first transistor (126) is the source electrode of described field-effect transistor, and the drain electrode that described second terminal of described the first transistor is described field-effect transistor and the described control terminal of described the first transistor are the grids of described field-effect transistor.
6. transformer circuit device as claimed in claim 1, it is characterized in that, the resistance of described at least one resistor (123,124,125) is selected as making that the voltage on described at least one resistor is corresponding to making described transistor seconds (122) enter the needed control electromotive force of conduction state to the maximum permissible current of described photovoltaic element (114).
7. transformer circuit device as claimed in claim 1, it is characterized in that described secondary circuit (104) comprises for the current measurement electronic circuit (108) of carrying out the current surveillance operation and/or is used for carrying out the voltage measurement electronic circuit (110) that monitoring voltage is operated.
8. transformer circuit device as claimed in claim 1 is characterized in that, described device comprises for the feedback device (118) that information is provided from described primary side to described primary side.
9. transformer circuit device as claimed in claim 8, it is characterized in that, described device comprises the anti-electronic circuit (120) that swashs in described primary side, and this instead swashs electronic circuit (120) and controls described transformer for utilizing via described feedback device (118) from the information that described primary side receives.
10. transformer circuit device as claimed in claim 8 or 9; it is characterized in that; described device comprises second protected location (111) that is integrated into described secondary circuit (104), is connected in series with described at least one photovoltaic element (114), and it is configured to without delay destructive current signal be reacted.
11. transformer circuit device as claimed in claim 10; it is characterized in that; described second protected location (111) is the over-current protecting unit that comprises the 3rd transistor (130) and at least one resistor (132,134), and the first terminal of this at least one resistor is coupled to described photovoltaic element (114).
12. transformer circuit device as claimed in claim 11, it is characterized in that, described the 3rd transistor (130) is bipolar transistor, the base stage of described bipolar transistor is coupled to the described the first terminal of described at least one resistor (132,134), and the emitter of described bipolar transistor is connected to second terminal of described at least one resistor (132,134) and the collector coupled of described bipolar transistor arrives described feedback device (118).
13. transformer circuit device as claimed in claim 12, it is characterized in that, the resistance of described at least one resistor (132,134) is selected such that do not having the voltage on described at least one resistor (132,134) under the situation of destructive current signal to be lower than the threshold voltage of described the 3rd transistor (130), and exists the voltage on described at least one resistor (132,134) under the situation of destructive current signal to be higher than the threshold voltage of described the 3rd transistor (130).
14. transformer circuit device as claimed in claim 1 is characterized in that, described photovoltaic element (114) comprises at least three Light-Emitting Diodes (LED).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10159338A EP2375857A1 (en) | 2010-04-08 | 2010-04-08 | Transformer arrangement for preventing optoelectronics components from damaging |
| EP10159338.2 | 2010-04-08 | ||
| EP10159335A EP2375856A1 (en) | 2010-04-08 | 2010-04-08 | Transformer arrangement for protecting optoelectronics components |
| EP10159335.8 | 2010-04-08 | ||
| PCT/FI2011/050305 WO2011124767A1 (en) | 2010-04-08 | 2011-04-07 | Transformer arrangement for protecting optoelectronics components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071572U true CN203071572U (en) | 2013-07-17 |
Family
ID=44762056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011900005166U Expired - Fee Related CN203071572U (en) | 2010-04-08 | 2011-04-07 | Transformer circuit device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN203071572U (en) |
| DE (1) | DE112011101249T5 (en) |
| WO (1) | WO2011124767A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9301397A (en) * | 1993-08-12 | 1995-03-01 | Cm Personnel Participation Bv | Safety switching device for electronic switching devices in general and for an electronic ballast for gas discharge tubes in particular. |
| US6577512B2 (en) * | 2001-05-25 | 2003-06-10 | Koninklijke Philips Electronics N.V. | Power supply for LEDs |
| EP2964000B1 (en) * | 2002-12-19 | 2022-10-05 | Signify Holding B.V. | Led driver |
| EP1808051A1 (en) | 2004-10-27 | 2007-07-18 | Koninklijke Philips Electronics N.V. | Startup flicker suppression in a dimmable led power supply |
-
2011
- 2011-04-07 CN CN2011900005166U patent/CN203071572U/en not_active Expired - Fee Related
- 2011-04-07 DE DE112011101249T patent/DE112011101249T5/en not_active Ceased
- 2011-04-07 WO PCT/FI2011/050305 patent/WO2011124767A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011124767A1 (en) | 2011-10-13 |
| DE112011101249T5 (en) | 2013-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Espoo, Finland Patentee after: Helvar Oy Ab Address before: Finland Carle Gera Patentee before: Helvar Oy Ab |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20180407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |