Inventor · disambiguated record
Yoshihisa Koyama
Also filed as: KOYAMA YOSHIHISA
23 granted patents·442 citations·filing 1985–1995
96Inventor score
Top patents by PatentIndex Score
23 records- 0191US5406095ALight emitting diode array and production method of the light emitting diodeVICTOR COMPANY OF JAPAN·Filed 1993·Granted Apr 11, 1995·158 cites·10 claims
- 0285US5161007ARecording head with carrier generation and transport layers adjacent a photo-modulation layer for recording information included in an electro-magnetic radiation-beam applied theretoVICTOR COMPANY OF JAPAN·Filed 1991·Granted Nov 3, 1992·31 cites·9 claims
- 0383US5315410AMethod and apparatus for recording optical information by using a photoelectric transducerVICTOR COMPANY OF JAPAN·Filed 1991·Granted May 24, 1994·28 cites·13 claims
- 0477US5191408AColor imaging system with selectively openable optical shutterVICTOR COMPANY OF JAPAN·Filed 1991·Granted Mar 2, 1993·23 cites·42 claims
- 0573US5408341AMethod and apparatus for recording optical information in a photoelectric transducer controlled by a sensed condition thereofVICTOR COMPANY OF JAPAN·Filed 1994·Granted Apr 18, 1995·16 cites·8 claims
- 0667US5598373ASemiconductor memory systemHITACHI LTD·Filed 1995·Granted Jan 28, 1997·29 cites·8 claims
- 0766US4658283ASemiconductor integrated circuit device having a carrier trapping trench arrangementHITACHI LTD·Filed 1985·Granted Apr 14, 1987·20 cites·4 claims
- 0863US5426613ASemiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method thereforHITACHI LTD·Filed 1992·Granted Jun 20, 1995·18 cites·7 claims
- 0962US4752819ASemiconductor integrated circuit device having a carrier trapping trench arrangementHITACHI LTD·Filed 1987·Granted Jun 21, 1988·17 cites·24 claims
- 1061US5440521ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1993·Granted Aug 8, 1995·23 cites·13 claims
- 1158US5805513ASemiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method thereforHITACHI LTD·Filed 1995·Granted Sep 8, 1998·15 cites·8 claims
- 1256US5214457AReflective overhead projector with light-to-light converterVICTOR COMPANY OF JAPAN·Filed 1991·Granted May 25, 1993·20 cites·9 claims
- 1350US5367359APlate-making method and plate-making apparatus for printingVICTOR COMPANY OF JAPAN·Filed 1993·Granted Nov 22, 1994·10 cites·1 claims
- 1450US5217917ASemiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method thereforHITACHI LTD·Filed 1990·Granted Jun 8, 1993·11 cites·20 claims
- 1542US5430705AMethod and apparatus for recording and reproducing main and sub informationVICTOR COMPANY OF JAPAN·Filed 1991·Granted Jul 4, 1995·5 cites·2 claims
- 1638US5313288ARecording medium and recording/reproduction apparatus thereofVICTOR COMPANY OF JAPAN·Filed 1992·Granted May 17, 1994·5 cites·2 claims
- 1734US5151772ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1990·Granted Sep 29, 1992·6 cites·32 claims
- 1833US5319461ARecording medium and recording apparatus wherein voltage is applied only to peripheral edges of the recording mediumVICTOR COMPANY OF JAPAN·Filed 1992·Granted Jun 7, 1994·3 cites·9 claims
- 1931US5241376ACinematographic systemVICTOR COMPANY OF JAPAN·Filed 1991·Granted Aug 31, 1993·1 cites·10 claims
- 2031US5151781AMethod of recording color image informationVICTOR COMPANY OF JAPAN·Filed 1991·Granted Sep 29, 1992·1 cites·3 claims
- 2130US5422663AImage formation and erasure on and from scattering-mode light-modulation deviceVICTOR COMPANY OF JAPAN·Filed 1994·Granted Jun 6, 1995·1 cites·5 claims
- 2230US5337078AApparatus and method for recording information carried by electro-magnetic radiation beamVICTOR COMPANY OF JAPAN·Filed 1992·Granted Aug 9, 1994·0 cites·3 claims
- 2330US5315318AImage formation and erasure on and from scattering-mode light-modulation deviceVICTOR COMPANY OF JAPAN·Filed 1992·Granted May 24, 1994·1 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →