Inventor · disambiguated record
Masaji Nishikawa
Also filed as: NISHIKAWA MASAJI
110 granted patents·1 pending application·1,653 citations·filing 1974–2002
99Inventor score
Top patents by PatentIndex Score
111 records- 0198US4799070AIon flow electrostatic recording process and apparatusOLYMPUS OPTICAL CO·Filed 1987·Granted Jan 17, 1989·92 cites·28 claims
- 0298US4377334AMagnet roll developing unitOLYMPUS OPTICAL CO·Filed 1980·Granted Mar 22, 1983·82 cites·14 claims
- 0396US4805033AMethod of forming oblique dot patternOLYMPUS OPTICAL CO·Filed 1988·Granted Feb 14, 1989·140 cites·6 claims
- 0495US4338017AElectrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1981·Granted Jul 6, 1982·50 cites·3 claims
- 0593US4401383ATransfer device for use in retention type electrophotographic copying machineOLYMPUS OPTICAL CO·Filed 1981·Granted Aug 30, 1983·42 cites·9 claims
- 0691US4550998AToner concentration detecting deviceOLYMPUS OPTICAL CO·Filed 1982·Granted Nov 5, 1985·36 cites·18 claims
- 0790US5296945AVideo ID photo printing apparatus and complexion converting apparatusOLYMPUS OPTICAL CO·Filed 1992·Granted Mar 22, 1994·111 cites·8 claims
- 0890US4615606AApparatus for developing electrostatic latent imageOLYMPUS OPTICAL CO·Filed 1983·Granted Oct 7, 1986·35 cites·12 claims
- 0990US4522866AElastomer member with non-tacky surface treating layer and method of manufacturing sameOLYMPUS OPTICAL CO·Filed 1982·Granted Jun 11, 1985·54 cites·9 claims
- 1090US4307432ACharge apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted Dec 22, 1981·42 cites·10 claims
- 1187US4324486ARecording device including a heating meansOLYMPUS OPTICAL CO·Filed 1979·Granted Apr 13, 1982·24 cites·10 claims
- 1287US3987463AAutomatic exposure control circuit for photomicrographic apparatusOLYMPUS OPTICAL CO·Filed 1974·Granted Oct 19, 1976·16 cites·11 claims
- 1385US4727385AImage forming apparatus including means for dehumidifyingOLYMPUS OPTICAL CO·Filed 1986·Granted Feb 23, 1988·39 cites·10 claims
- 1485US4257700AElectrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted Mar 24, 1981·23 cites·6 claims
- 1584US4367037ATemperature controller for photographic heat fixing unitOLYMPUS OPTICAL CO·Filed 1981·Granted Jan 4, 1983·24 cites·16 claims
- 1684US4248517AIlluminating device for use in a copying apparatus, a facsimile apparatus, and the likeOLYMPUS OPTICAL CO·Filed 1978·Granted Feb 3, 1981·28 cites·6 claims
- 1783US5754198AInk jet printerOLYMPUS OPTICAL CO·Filed 1995·Granted May 19, 1998·48 cites·7 claims
- 1883US4518248AApparatus for forming image by developing charge latent image with two component dry developing agentOLYMPUS OPTICAL CO·Filed 1983·Granted May 21, 1985·24 cites·11 claims
- 1981US4093368AElectrographic apparatusOLYMPUS OPTICAL CO·Filed 1976·Granted Jun 6, 1978·19 cites·6 claims
- 2080US4415254AElectrophotographic copying apparatus with transfer bias voltage stabilizerOLYMPUS OPTICAL CO·Filed 1981·Granted Nov 15, 1983·21 cites·2 claims
- 2180US4354454ADeveloping device with magnetic pole having magnetic spacer membersOLYMPUS OPTICAL CO·Filed 1980·Granted Oct 19, 1982·22 cites·9 claims
- 2278US4264190AToner cleaning device for an electrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted Apr 28, 1981·17 cites·4 claims
- 2377US4260242AElectrophotographic apparatus for forming a duplicated image at any desired position on a record carrierOLYMPUS OPTICAL CO·Filed 1979·Granted Apr 7, 1981·16 cites·15 claims
- 2477US4154520AElectrostatic latent image developing deviceOLYMPUS OPTICAL CO·Filed 1977·Granted May 15, 1979·16 cites·3 claims
- 2576US4260236AElectrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted Apr 7, 1981·16 cites·16 claims
- 2675US5576135AProcessing method based on resist pattern formation, and resist pattern forming apparatusOLYMPUS OPTICAL CO·Filed 1995·Granted Nov 19, 1996·24 cites·28 claims
- 2775US4270860AElectrophotographic apparatus employing a control assembly for controlling successive duplication of a documentOLYMPUS OPTICAL CO·Filed 1979·Granted Jun 2, 1981·13 cites·14 claims
- 2874US4295734AFilter assembly for collecting used toner of electrophotographic copying machineOLYMPUS OPTICAL CO·Filed 1979·Granted Oct 20, 1981·15 cites·11 claims
- 2974US4040731AElectrophotographic apparatus having a screen-type photoconductive drumOLYMPUS OPTICAL CO·Filed 1976·Granted Aug 9, 1977·14 cites·4 claims
- 3072US6688741B2Ink jet printing medium for an embossed interior decorating memberOLYMPUS OPTICAL CO·Filed 2002·Granted Feb 10, 2004·6 cites·13 claims
- 3172US4745487AHelical scanning apparatus with one or more rows of scanning elements and an object of scanning disposed at an angle to the axis of a rotating drum to eliminate skew of scanning linesOLYMPUS OPTICAL CO·Filed 1985·Granted May 17, 1988·26 cites·15 claims
- 3272US4053769ACorona charge deviceOLYMPUS OPTICAL CO·Filed 1976·Granted Oct 11, 1977·14 cites·2 claims
- 3369US4943735AApparatus for measuring concentration of liquid developerOLYMPUS OPTICAL CO·Filed 1988·Granted Jul 24, 1990·15 cites·5 claims
- 3468US5115320AApparatus for editing and printing a video imageOLYMPUS OPTICAL CO·Filed 1990·Granted May 19, 1992·30 cites·4 claims
- 3568US5016036ADevice for developing recording media with liquid developerOLYMPUS OPTICAL CO·Filed 1990·Granted May 14, 1991·17 cites·8 claims
- 3668US4273438AElectrostatographic printing method and apparatusOLYMPUS OPTICAL CO·Filed 1978·Granted Jun 16, 1981·21 cites·4 claims
- 3767US4548401ASheet feed apparatusOLYMPUS OPTICAL CO·Filed 1983·Granted Oct 22, 1985·15 cites·2 claims
- 3865US6409333B1Ink jet printing medium for an embossed interior decorating memberOLYMPUS OPTICAL CO·Filed 1999·Granted Jun 25, 2002·13 cites·21 claims
- 3964US4623070AClosure capSHIBAZAKI SEISAKUSHO LTD·Filed 1985·Granted Nov 18, 1986·32 cites·16 claims
- 4064US4371257AAutomatic controller of electrification of magnetic tonerOLYMPUS OPTICAL CO·Filed 1981·Granted Feb 1, 1983·12 cites·10 claims
- 4163US4733270AMulti-color image recording apparatus capable of removing a recorded-on roll medium, without unrollingOLYMPUS OPTICAL CO·Filed 1987·Granted Mar 22, 1988·14 cites·10 claims
- 4263US4269503AToner cleaning apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted May 26, 1981·10 cites·11 claims
- 4362US4657238ASheet turn over apparatusOLYMPUS OPTICAL CO·Filed 1985·Granted Apr 14, 1987·13 cites·13 claims
- 4461US4724025ATransfer coating methodOLYMPUS OPTICAL CO·Filed 1985·Granted Feb 9, 1988·9 cites·1 claims
- 4560US6106623APrinted sheet coating apparatusOLYMPUS OPTICAL CO·Filed 1998·Granted Aug 22, 2000·18 cites·15 claims
- 4660US4215931AElectrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1979·Granted Aug 5, 1980·9 cites·15 claims
- 4759US4408870ADuplicating system comprising electrophotographic copying apparatus and option devicesOLYMPUS OPTICAL CO·Filed 1981·Granted Oct 11, 1983·6 cites·27 claims
- 4859US4218129AElectrophotographic apparatusOLYMPUS OPTICAL CO·Filed 1978·Granted Aug 19, 1980·9 cites·5 claims
- 4957US4984029ARolled recording paper setting apparatusOLYMPUS OPTICAL CO·Filed 1989·Granted Jan 8, 1991·10 cites·3 claims
- 5057US4533228AOptical image projector for projecting an erect positive image of unity magnification and for minimizing degradation in resolutionOLYMPUS OPTICAL CO·Filed 1983·Granted Aug 6, 1985·5 cites·8 claims
Showing the top 50 of 111 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →