CN1162877C - Winding with core tube - Google Patents
Winding with core tube Download PDFInfo
- Publication number
- CN1162877C CN1162877C CNB981034985A CN98103498A CN1162877C CN 1162877 C CN1162877 C CN 1162877C CN B981034985 A CNB981034985 A CN B981034985A CN 98103498 A CN98103498 A CN 98103498A CN 1162877 C CN1162877 C CN 1162877C
- Authority
- CN
- China
- Prior art keywords
- winding
- tube core
- inductance
- building brick
- electronic building
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
-
- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention relates to a winding with a tube core, which is used for reducing the wastage of the power supply when a power supply is switched on. The winding at least comprises a winding and a tube core of an electronic component, wherein the winding is used for switching on the power supply, and one end of the tube core of the electronic component is directly connected to the winding so as to be convenient for directly leading the power supply in the tube core when the power supply is switched on to reduce the wastage of the power supply.
Description
Technical field
The present invention is a kind of winding with tube core, especially refer to switch type power supplying device (SPS, Switching Power Supply) in, the winding of secondary winding of transformer (winding) and inductance band tube core, it is a technology of utilizing encapsulation, the tube core of electronic component is connected directly on secondary winding or the inductance winding, by the mode that reduces contact (connecting joints), to reach the effect of power saving and reduced volume.
Background technology
The improvement of the inner interconnection technique of high-power switchgear formula power supply unit, those skilled in the art have contribute many.The method of knowing is that the table that separates is followed the formula element, is welded on the metallic plate of tool good thermal properties, and the element pin is welded on above the circuit of substrate, finishes element and mutual being connected of element.Thus, substrate can reach interconnecting of element and heat treated dual purpose.This provides the mode of acceptable product usefulness and reasonable prices undoubtedly, yet if desire efficient and the packaging density of Da Genggao, its limitation is arranged but.
High-power switchgear formula power supply unit can provide bigger power except wanting, and littler volume will be arranged, and so just can cater to industrial demand, to work for maximum business opportunity.What people paid close attention to, promptly within littler encapsulation more power to be provided and to improve efficient.
See also Fig. 1 (A), it is the semibridge system transducer of current doubles common among the SPS, and mos field effect transistor (MOSFET) or diode all can be used as the usefulness of rectifier cell.Wherein, the secondary winding 30 of transformer outputs to two inductance 32,34 windings.By the rectification of rectifier cell 26,28, with the output DC source (+Vo ,-Vo).Fig. 1 (B) is close with Fig. 1 (A), only the ornaments difference of rectifier cell.
See also Fig. 2 (A) again, it is a consequent converter, and metal-oxide half field effect transistor (MOSFET) or diode all can be used as the usefulness of rectifier cell.Wherein, 10 of transformer secondary windings output current to inductance 12 windings, and 16,14 of rectifier cells are used for rectification, with output DC (+Vo ,-Vo).Fig. 2 (B) is close with Fig. 2 (A), only the position difference of the ornaments of rectifier cell.
See also Fig. 3, it is the structure of MOSFET encapsulation.The rectifier cell of packaged type widely industry uses.MOSFET tube core 152 is welded on the copper coin 170, and its source electrode (source) and grid (gate) are connected to contact 158 by welding wire 160,162 respectively, 154, and drain (drain) directly is connected to contact 156 at the MOSFET back side, and then wires up with resin (epoxy) 164.
See also Fig. 6 (A) and Fig. 2 (B).In Fig. 2 (B), in Fig. 2 (B) for transformer secondary winding 19, MOSFET element 18 and inductance 20 threes are serially connected, must be welded on first copper cash 124 of circuit board with respect to secondary winding 122 among Fig. 6 (A), again the source electrode of MOSFET element (source) pin 116 is welded on first copper cash 124, makes secondary winding 19 and MOSFET element 18 strings together.Afterwards, the copper coin 108 with MOSFET is welded on second copper cash 104 again, and the pin 100 of inductance is welded in second copper cash 104, and MOSFET element 18 is connected in series with inductance 20.Certainly, the MOSFET element internal more has pad 110 in order to tube core 112 and copper coin 108 are connected together.
By Fig. 6 (A) and Fig. 2 (B) as can be known, prior art is serially connected in order to make winding 19, MOSFTET element 18 and inductance 20 threes system, must be through five pads 102,106,110,118,120.Be the pads that number is too many, make big electric current through wherein the time, can consume many electric power, produce unnecessary waste.
People all know, p=I
2R, under fixed current (I), when resistance (R) is healed when big, the electric power that is consumed (P) is also just big.People can obtain the resistance sizes of each pad by following mathematical derivation, to get a more accurate estimation.
Suppose pin 100 and 122, circuit 104 and 124 resistance are disregarded, and only demand the resistance of each pad.If the length and width height of pad respectively is a, b and parameter x, weld can be bigger than the one side on top in the one side of bottom, and the angle of generation is θ, and ρ is a resistance coefficient, and d is thick (height) degree of pad.Then Yi Xia integration type can be obtained the size of each pad resistance.
Can obtain the resistance of each pad according to following formula (2), as shown in Table 1.
Table one
| Pad | Tin copper silver ratio | ρ(Ω·cm) | a(mm) | b(mm) | d(mm) | θ | R(μΩ) |
| 102 | 62/36/2 | 16.8 | 4 | 5 | 0.5 | 45 | 3.43 |
| 106 | 62/36/2 | 16.8 | 7.5 | 8 | 0.5 | 45 | 1.24 |
| 110 | 96.5/0/3.5 | 12.3 | 5 | 4 | 0.5 | 45 | 2.51 |
| 118 | 62/36/2 | 16.8 | 1 | 2.5 | 0.5 | 45 | 19.97 |
| 120 | 62/36/2 | 16.8 | 4 | 5 | 0.5 | 45 | 3.43 |
Secondly, the resistance of lead or copper coin can be tried to achieve by following formula.
R＝ρ*L/A
Wherein, L is a length, and A is an area.Can obtain copper coin (copper tab) 108 by (3) formula, the resistance of conductors such as welding wire 114 and pin 116, as shown in Table 2.Above-mentioned each resistance of summation is 874.35 μ Ω, wherein by the resistance that pad caused, its certain ratio is arranged, and can not be ignored in fact.
Table two
| Conductor | ρ(Ω·cm) | A(mm 2) | L(mm) | R(μΩ) |
| 108 | 1.67 | 80 | 1.3 | 0.27 |
| 114 | 2.65 | 0.19 | 5 | 697.37 |
| 116 | 1.67 | 0.8 | 7 | 146.12 |
When the electric current of importing/going out when the switch type power supplying device was more and more big, let us not go into the question now in the influence of active element and passive component, comprises all conductors of circuit and contact, owing to flow through highdensity electric current, the relative more and more many power of meeting waste.It is also big that common contact influences entire circuit resistance ratio circuit, is an important topic in fact so reduce the number of contact.
Secondly, the density of encapsulation is always decided according to the size of element.Switch type power supplying device with high power density, many rectifier cells of most of the time (rectifier) increase efficient with parallel connection, thereby accounted for sizable encapsulated space, cause the volume of prior art switch type power supplying device effectively to dwindle.
Summary of the invention
This case is promptly according to the shortcoming of above-mentioned prior art, the tube core of rectifier cell is incorporated on transformer or the inductance winding, to reach the purpose of effective reduced volume.Remove this,, more the number of contact can be reduced, to reach the purpose of saving electric power by tube core is incorporated on the winding.
In order to achieve the above object, this case provides a kind of winding with tube core, when energized, in order to reduce the loss of this power supply, the winding that it is characterized in that this band tube core comprises: a transformer, and this transformer comprises secondary side winding, and this secondary side winding is formed by one first winding and one group of first electromagnetic core, this transformer also comprises first side winding, and this first side winding is used to connect this power supply; The first inductance winding, this first inductance winding is formed by one second winding and one group of second electromagnetic core, and an end of this first inductance winding provides first output; And one first electronic building brick tube core, this first electronic building brick tube core is connected directly to this first inductance winding, and an end of this first electronic building brick tube core directly is electrically connected on this first inductance winding, when connecting this power supply, directly this power supply is imported this first electronic building brick tube core, to reduce the loss of this power supply, the other end of this first electronic building brick tube core is connected to one second output that a metal strip provides.
According to above-mentioned conception, it is characterized in that also comprising: one second inductance winding, this second inductance winding is formed by a tertiary winding and one group of the 3rd electromagnetic core, and an end of this second inductance winding is connected with this first output; And one second electronic building brick tube core, this second electronic building brick tube core is connected directly to this second inductance winding, and an end of this second electronic building brick tube core directly is electrically connected on this second inductance winding, when connecting this power supply, directly this power supply is imported this second electronic building brick tube core, to reduce the loss of this power supply, the other end of this second electronic building brick tube core is electrically connected to second output.
According to above-mentioned conception, it is characterized in that this first inductance winding is a metal strip (metal strip).
According to above-mentioned conception, it is characterized in that also coating last layer scolder (solder) of this first inductance winding.
According to above-mentioned conception, it is characterized in that this scolder is gold and wherein a kind of of nickel.
According to above-mentioned conception, it is characterized in that this first inductance winding is the assembly that separates with this Circuit Fault on Secondary Transformer winding.
According to above-mentioned conception, it is characterized in that this first inductance winding is integrated (integrated) in this Circuit Fault on Secondary Transformer winding.
According to above-mentioned conception, it is characterized in that this first electronic component tube core is a rectifier cell (rectifier) tube core.
According to above-mentioned conception, it is characterized in that the diode tube core that this rectifier cell tube core is a unidirectional conducting.
According to above-mentioned conception, it is characterized in that mos field effect transistor (bi-directional MOSFET) tube core that this rectifier cell tube core is a two-way admittance.
According to above-mentioned conception, it is characterized in that this first electronic building brick tube core is connected directly to this first inductance winding with welding wire.
Description of drawings
This case must be by following accompanying drawing and detailed description, and making has a more deep understanding:
Fig. 1 (A): the semibridge system transducer of common current doubles among the SPS;
The another kind of pattern of Fig. 1 (B): Fig. 1 (A);
Fig. 2 (A): common consequent converter among the SPS;
The another kind of pattern of Fig. 2 (B): Fig. 2 (A);
Fig. 3: the packing of prior art MOSFET tube core;
Fig. 4: the preferred embodiment one that this case MOSFET tube core and winding merge;
Fig. 5: the preferred embodiment two that this case MOSFET tube core and winding merge;
Fig. 6 (A): the serial connection of prior art winding, MOSFET tube core and inductance;
Fig. 6 (B): the preferred embodiment of this case winding, MOSFET tube core and inductance serial connection.
The main member of above accompanying drawing is as follows:
30,10,19,88,48: secondary winding
32,34,12,20,96,94,50: the inductance winding
150,152,52,54,112,138: the electronic component tube core
26,28,16,14, the 18:MOSFET element
114,140,160,162: welding wire
102,106,10,118,120,132,136,142: pad
Embodiment
See also Fig. 4 and Fig. 1 (A).Fig. 4 is Transformer Winding and the inductance winding corresponding to Fig. 1 (A) secondary side.Electromagnetic core (core) 80,82 and winding 88 form the secondary winding 30 of transformer.In like manner, electromagnetic core 86,92 and winding 96 form inductance winding 32, and electromagnetic core 84,90 and winding 94 form inductance winding 34.Two rectifier cells 150 and 152 are directly sticked together on the winding of transformer and inductance, shown in the MOSFET element 28,26 of electrical relation such as Fig. 1 (A).
See also Fig. 5 and Fig. 2 (A).The another kind of practice also can directly be connected tube core on the winding.Electromagnetic core 40,42 and winding 48 form secondary winding 10, and electromagnetic core 44,46 and winding 50 form inductance winding 12.Two rectifier cells 52 and 54 directly are attached on transformer and the inductance winding, shown in the MOSFET element 16,14 of its electrical relation such as Fig. 2 (A).
See also Fig. 6 (B).Make comparisons with Fig. 6 (A) of prior art.As can be known, the pad of this case can reduce many.The pin of pulling out from transformer secondary end 146 directly with tube core 138 welding wires 140 together, an end 130 that is welded to the inductance winding is more promptly finished the polyphone of the middle secondary winding 19 of Fig. 2 (B), MOSFET element 18 and inductance winding 20.In addition, 132 of pads are used for making an end 130 of inductance winding to be connected together with copper cash 134, and pad 142 is used for making transformer secondary end 146 and copper cash 144 to be connected together, in order to the heat radiation of element and the raising of efficient.
Because Fig. 6 (B) only needs a pad 136 get final product, not needing has more than five pads as prior art Fig. 6 (A), so can save electric power, the waste of minimizing electric power.Secondly, combine the effect that more can obtain reduced volume with winding.
The conductor of electric current process only is pad 136 and welding wire 140, can try to achieve resistance by above-mentioned (2) formula and (3) formula, as shown in Table 3.The all-in resistance of the two is 699.97 μ Ω.If the load current of power supply supply 100A, with the encapsulation technology of prior art by contrast, this case can reduce the loss 1.74W of electric power.
Table three
| Conductor | Tin copper silver ratio | ρ(Ω·cm) | a(mm) | b(mm) | d(mm) | θ | R(μΩ) |
| 136 | 96.5/0/3.5 | 12.3 | 5 | 4 | 0.5 | 45 | 2.51 |
| 140 | x | 2.65 | A＝0.8mm 2 | L＝5 | x | 697.37 | |
In sum, the novelty of this case is that the combination of winding electric sub-element tube core is unprecedented.And, make its progressive show nothing left because the minimizing of pad makes electric power can avoid unnecessary waste, and can dwindle the volume of assembling.Certainly, the practicality that this case appeared is more self-evident to be the application that in accordance with the law proposes patent to help.
This case must be appointed by those skilled in the art and executed that the craftsman thinks and be to modify the protection range of right neither disengaging claims as all.
Claims (11)
1. winding with tube core when energized, in order to reduce the loss of this power supply, is characterized in that the winding of this band tube core comprises:
A transformer, this transformer comprises secondary side winding, and this secondary side winding is formed by one first winding and one group of first electromagnetic core, and this transformer also comprises first side winding, and this first side winding is used to connect this power supply;
The first inductance winding, this first inductance winding is formed by one second winding and one group of second electromagnetic core, and an end of this first inductance winding provides first output; And
One first electronic building brick tube core, this first electronic building brick tube core is connected directly to this first inductance winding, and an end of this first electronic building brick tube core directly is electrically connected on this first inductance winding, when connecting this power supply, directly this power supply is imported this first electronic building brick tube core, to reduce the loss of this power supply, the other end of this first electronic building brick tube core is connected to one second output that a metal strip provides.
2. the winding of band tube core as claimed in claim 1 is characterized in that also comprising:
One second inductance winding, this second inductance winding is formed by a tertiary winding and one group of the 3rd electromagnetic core, and an end of this second inductance winding is connected with this first output; And
One second electronic building brick tube core, this second electronic building brick tube core is connected directly to this second inductance winding, and an end of this second electronic building brick tube core directly is electrically connected on this second inductance winding, when connecting this power supply, directly this power supply is imported this second electronic building brick tube core, to reduce the loss of this power supply, the other end of this second electronic building brick tube core is electrically connected to second output.
3. the winding of band tube core as claimed in claim 1 is characterized in that this first inductance winding is a metal strip.
4. the winding of band tube core as claimed in claim 3 is characterized in that also coating last layer scolder of this first inductance winding.
5. the winding of band tube core as claimed in claim 4 is characterized in that this scolder is gold and wherein a kind of of nickel.
6. the winding of band tube core as claimed in claim 1 is characterized in that this first inductance winding is the assembly that separates with this Circuit Fault on Secondary Transformer winding.
7. the winding of band tube core as claimed in claim 1 is characterized in that this first inductance winding is integrated in this Circuit Fault on Secondary Transformer winding.
8. the winding of band tube core as claimed in claim 1 is characterized in that this first electronic building brick tube core is a rectifier cell tube core.
9. the winding of band tube core as claimed in claim 8 is characterized in that the diode chip that this rectifier cell tube core is a unidirectional conducting.
10. the winding of band tube core as claimed in claim 8 is characterized in that the mos field effect transistor tube core that this rectifier cell tube core is a two-way admittance.
11. the winding of band tube core as claimed in claim 1 is characterized in that this first electronic building brick tube core is connected directly to this first inductance winding with welding wire.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981034985A CN1162877C (en) | 1998-08-06 | 1998-08-06 | Winding with core tube |
| JP28375498A JP3309214B2 (en) | 1998-08-06 | 1998-10-06 | Winding assembly |
| GB9902861A GB2340314A (en) | 1998-08-06 | 1999-02-09 | Semiconductor device directly connected to the conductor of an inductive arrangement |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981034985A CN1162877C (en) | 1998-08-06 | 1998-08-06 | Winding with core tube |
| JP28375498A JP3309214B2 (en) | 1998-08-06 | 1998-10-06 | Winding assembly |
| GB9902861A GB2340314A (en) | 1998-08-06 | 1999-02-09 | Semiconductor device directly connected to the conductor of an inductive arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1244717A CN1244717A (en) | 2000-02-16 |
| CN1162877C true CN1162877C (en) | 2004-08-18 |
Family
ID=66448270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981034985A Expired - Fee Related CN1162877C (en) | 1998-08-06 | 1998-08-06 | Winding with core tube |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3309214B2 (en) |
| CN (1) | CN1162877C (en) |
| GB (1) | GB2340314A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2398181A (en) * | 2003-02-04 | 2004-08-11 | Transparent Engineering Ltd | Nonplanar lead-frame; mounting magnetic components and a circuit board; lead-frame and heat sink |
| JP4662033B2 (en) * | 2005-03-31 | 2011-03-30 | Ｔｄｋ株式会社 | DC-DC converter |
| JP4735469B2 (en) * | 2005-08-31 | 2011-07-27 | Ｔｄｋ株式会社 | Switching power supply |
| US7623362B2 (en) * | 2007-10-30 | 2009-11-24 | Tdk Corporation | Switching power supply unit |
| JP4895131B2 (en) * | 2007-11-30 | 2012-03-14 | Ｔｄｋ株式会社 | Coil set, switching power supply device, and method of manufacturing coil set |
| JP4862846B2 (en) * | 2008-02-29 | 2012-01-25 | 株式会社デンソー | Power transformer and inductance components |
| JP5217528B2 (en) * | 2008-03-13 | 2013-06-19 | パナソニック株式会社 | Multiple inductor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4509109A (en) * | 1982-09-13 | 1985-04-02 | Hansen Thomas C | Electronically controlled coil assembly |
| US4635179A (en) * | 1985-10-25 | 1987-01-06 | Eldec Corporation | Transformer rectifier |
| US4864486A (en) * | 1988-07-29 | 1989-09-05 | International Business Machines Corporation | Plank and frame transformer |
| US4914561A (en) * | 1989-02-03 | 1990-04-03 | Eldec Corporation | Dual transformer device for power converters |
| US5642276A (en) * | 1995-02-08 | 1997-06-24 | Lucent Technologies Inc. | High frequency surface mount transformer-diode power module |
-
1998
- 1998-08-06 CN CNB981034985A patent/CN1162877C/en not_active Expired - Fee Related
- 1998-10-06 JP JP28375498A patent/JP3309214B2/en not_active Expired - Fee Related
-
1999
- 1999-02-09 GB GB9902861A patent/GB2340314A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JP3309214B2 (en) | 2002-07-29 |
| CN1244717A (en) | 2000-02-16 |
| GB2340314A (en) | 2000-02-16 |
| GB9902861D0 (en) | 1999-03-31 |
| JP2000125563A (en) | 2000-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040818 Termination date: 20090806 |