CA1149081A - Reference voltage generator device - Google Patents
Reference voltage generator deviceInfo
- Publication number
- CA1149081A CA1149081A CA000321955A CA321955A CA1149081A CA 1149081 A CA1149081 A CA 1149081A CA 000321955 A CA000321955 A CA 000321955A CA 321955 A CA321955 A CA 321955A CA 1149081 A CA1149081 A CA 1149081A
- Authority
- CA
- Canada
- Prior art keywords
- voltage
- insulated gate
- reference voltage
- type
- gate field
- 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
Links
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4983—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET with a lateral structure, e.g. a Polysilicon gate with a lateral doping variation or with a lateral composition variation or characterised by the sidewalls being composed of conductive, resistive or dielectric material
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/24—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
- G05F3/242—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage
- G05F3/245—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage producing a voltage or current as a predetermined function of the temperature
-
- G—PHYSICS
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- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/41—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/411—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using bipolar transistors only
- G11C11/4113—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using bipolar transistors only with at least one cell access to base or collector of at least one of said transistors, e.g. via access diodes, access transistors
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- G—PHYSICS
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- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/41—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/413—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing, timing or power reduction
- G11C11/417—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing, timing or power reduction for memory cells of the field-effect type
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- G—PHYSICS
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- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
- G11C5/143—Detection of memory cassette insertion or removal; Continuity checks of supply or ground lines; Detection of supply variations, interruptions or levels ; Switching between alternative supplies
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- G11—INFORMATION STORAGE
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- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
- G11C5/147—Voltage reference generators, voltage or current regulators; Internally lowered supply levels; Compensation for voltage drops
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/088—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- H03F3/45632—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit
- H03F3/45744—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- H03F3/45632—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit
- H03F3/45744—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction
- H03F3/45748—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction by using a feedback circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/003—Modifications for increasing the reliability for protection
- H03K19/00369—Modifications for compensating variations of temperature, supply voltage or other physical parameters
- H03K19/00384—Modifications for compensating variations of temperature, supply voltage or other physical parameters in field effect transistor circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018507—Interface arrangements
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/0185—Coupling arrangements; Interface arrangements using field effect transistors only
- H03K19/018507—Interface arrangements
- H03K19/018514—Interface arrangements with at least one differential stage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0231—Astable circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
- H03K3/0233—Bistable circuits
- H03K3/02337—Bistables with hysteresis, e.g. Schmitt trigger
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
- H03K3/356—Bistable circuits
- H03K3/3565—Bistables with hysteresis, e.g. Schmitt trigger
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
- H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
- H03K5/2472—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude using field effect transistors
- H03K5/2481—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude using field effect transistors with at least one differential stage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45394—Indexing scheme relating to differential amplifiers the AAC of the dif amp comprising FETs whose sources are not coupled, i.e. the AAC being a pseudo-differential amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Nonlinear Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Electromagnetism (AREA)
- Automation & Control Theory (AREA)
- Semiconductor Integrated Circuits (AREA)
- Measurement Of Current Or Voltage (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Semiconductor Memories (AREA)
- Control Of Electrical Variables (AREA)
Applications Claiming Priority (22)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2544478A JPS54119653A (en) | 1978-03-08 | 1978-03-08 | Constant voltage generating circuit |
JP25444/1978 | 1978-03-08 | ||
JP3554578A JPS54129348A (en) | 1978-03-29 | 1978-03-29 | Constant voltage output circuit |
JP35545/1978 | 1978-03-29 | ||
JP39242/1978 | 1978-04-05 | ||
JP3924278A JPS54132753A (en) | 1978-04-05 | 1978-04-05 | Referential voltage generator and its application |
JP111717/1978 | 1978-09-13 | ||
JP111718/1978 | 1978-09-13 | ||
JP111725/1978 | 1978-09-13 | ||
JP111720/1978 | 1978-09-13 | ||
JP111719/1978 | 1978-09-13 | ||
JP11171878A JPS5539606A (en) | 1978-09-13 | 1978-09-13 | Reference voltage generation device |
JP111723/1978 | 1978-09-13 | ||
JP11172478A JPS5539412A (en) | 1978-09-13 | 1978-09-13 | Insulating gate field effect transistor integrated circuit and its manufacture |
JP11171778A JPS5539605A (en) | 1978-09-13 | 1978-09-13 | Reference voltage generation device |
JP111724/1978 | 1978-09-13 | ||
JP11172578A JPS5539413A (en) | 1978-09-13 | 1978-09-13 | Schmitt trigger circuit |
JP11172378A JPS5538677A (en) | 1978-09-13 | 1978-09-13 | Semiconductor memory with function of detecting power failure |
JP111722/1978 | 1978-09-13 | ||
JP11171978A JPS5539607A (en) | 1978-09-13 | 1978-09-13 | Reference voltage generation device |
JP11172278A JPS5539411A (en) | 1978-09-13 | 1978-09-13 | Reference voltage generator |
JP11172078A JPS5539608A (en) | 1978-09-13 | 1978-09-13 | Reference voltage generation device |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1149081A true CA1149081A (en) | 1983-06-28 |
Family
ID=27581900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000321955A Expired CA1149081A (en) | 1978-03-08 | 1979-02-20 | Reference voltage generator device |
Country Status (10)
Country | Link |
---|---|
CA (1) | CA1149081A ( ) |
CH (2) | CH657712A5 ( ) |
DE (2) | DE2954543C2 ( ) |
FR (1) | FR2447036B1 ( ) |
GB (1) | GB2016801B ( ) |
HK (4) | HK8084A ( ) |
IT (1) | IT1111987B ( ) |
MY (4) | MY8400375A ( ) |
NL (1) | NL7901335A ( ) |
SG (1) | SG41784G ( ) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2494519A1 (fr) * | 1980-11-14 | 1982-05-21 | Efcis | Generateur de courant integre en technologie cmos |
US4347476A (en) * | 1980-12-04 | 1982-08-31 | Rockwell International Corporation | Voltage-temperature insensitive on-chip reference voltage source compatible with VLSI manufacturing techniques |
JPS58221418A (ja) * | 1982-06-18 | 1983-12-23 | Hitachi Ltd | 基準電圧発生装置 |
JPS5940393A (ja) * | 1982-08-31 | 1984-03-06 | Nec Corp | メモリ回路 |
IT1179823B (it) * | 1984-11-22 | 1987-09-16 | Cselt Centro Studi Lab Telecom | Generatore di tensione differenziale di rifferimento per circuiti integrati ad alimentazione singola in tecnologia nmos |
FR2628547B1 (fr) * | 1988-03-09 | 1990-12-28 | Sgs Thomson Microelectronics | Generateur stabilise de fourniture de tension de seuil de transistor mos |
GB2298724B (en) * | 1991-11-15 | 1996-12-11 | Nec Corp | Constant voltage circuit |
EP0565806B1 (en) * | 1992-04-16 | 1996-08-28 | STMicroelectronics S.r.l. | Accurate MOS threshold voltage generator |
US5468666A (en) * | 1993-04-29 | 1995-11-21 | Texas Instruments Incorporated | Using a change in doping of poly gate to permit placing both high voltage and low voltage transistors on the same chip |
EP1102319B1 (en) * | 1999-11-19 | 2010-05-26 | STMicroelectronics Srl | Process for manufacturing electronic devices comprising high-voltage MOS and EEPROM transistors |
US8385147B2 (en) * | 2010-03-30 | 2013-02-26 | Silicon Storage Technology, Inc. | Systems and methods of non-volatile memory sensing including selective/differential threshold voltage features |
CN110707151B (zh) * | 2019-11-13 | 2023-04-07 | 江苏丽隽功率半导体有限公司 | 一种静电感应晶闸管及其制作方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7111459A ( ) * | 1970-08-21 | 1972-02-23 | ||
US3673471A (en) * | 1970-10-08 | 1972-06-27 | Fairchild Camera Instr Co | Doped semiconductor electrodes for mos type devices |
DE2050320A1 (de) * | 1970-10-13 | 1972-04-20 | Siemens Ag | Halbleiteranordnung |
JPS4952980A ( ) * | 1972-09-22 | 1974-05-23 | ||
US3995177A (en) * | 1973-01-02 | 1976-11-30 | Fairchild Camera And Instrument Corporation | Electronic watch |
US3975648A (en) * | 1975-06-16 | 1976-08-17 | Hewlett-Packard Company | Flat-band voltage reference |
US4100437A (en) * | 1976-07-29 | 1978-07-11 | Intel Corporation | MOS reference voltage circuit |
-
1979
- 1979-02-19 CH CH1621/79A patent/CH657712A5/de not_active IP Right Cessation
- 1979-02-20 FR FR7904226A patent/FR2447036B1/fr not_active Expired
- 1979-02-20 NL NL7901335A patent/NL7901335A/xx not_active Application Discontinuation
- 1979-02-20 CA CA000321955A patent/CA1149081A/en not_active Expired
- 1979-02-20 DE DE2954543A patent/DE2954543C2/de not_active Expired - Lifetime
- 1979-02-20 IT IT20368/79A patent/IT1111987B/it active
- 1979-02-20 DE DE19792906527 patent/DE2906527A1/de not_active Ceased
- 1979-03-06 GB GB7907817A patent/GB2016801B/en not_active Expired
-
1984
- 1984-01-24 HK HK80/84A patent/HK8084A/xx not_active IP Right Cessation
- 1984-06-04 SG SG417/84A patent/SG41784G/en unknown
- 1984-12-31 MY MY1984375A patent/MY8400375A/xx unknown
-
1985
- 1985-02-19 CH CH1928/85A patent/CH672391B5/de unknown
- 1985-05-09 HK HK351/85A patent/HK35185A/xx unknown
- 1985-05-09 HK HK363/85A patent/HK36385A/xx not_active IP Right Cessation
- 1985-05-09 HK HK364/85A patent/HK36485A/xx not_active IP Right Cessation
- 1985-12-30 MY MY658/85A patent/MY8500658A/xx unknown
- 1985-12-30 MY MY672/85A patent/MY8500672A/xx unknown
- 1985-12-30 MY MY671/85A patent/MY8500671A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB2016801B (en) | 1983-02-02 |
DE2954543C2 ( ) | 1990-04-12 |
CH657712A5 (de) | 1986-09-15 |
FR2447036B1 (fr) | 1986-10-17 |
SG41784G (en) | 1985-03-08 |
HK36485A (en) | 1985-05-17 |
MY8500658A (en) | 1985-12-31 |
NL7901335A (nl) | 1979-09-11 |
CH672391B5 (de) | 1990-05-31 |
IT7920368A0 (it) | 1979-02-20 |
CH672391GA3 ( ) | 1989-11-30 |
HK36385A (en) | 1985-05-17 |
DE2906527A1 (de) | 1979-10-18 |
MY8500671A (en) | 1985-12-31 |
MY8500672A (en) | 1985-12-31 |
HK35185A (en) | 1985-05-17 |
FR2447036A1 (fr) | 1980-08-14 |
GB2016801A (en) | 1979-09-26 |
MY8400375A (en) | 1984-12-31 |
HK8084A (en) | 1984-02-01 |
IT1111987B (it) | 1986-01-13 |
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Legal Events
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MKEX | Expiry |