Inventor
KOYAMA YOSHIHISA
JP27 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA YOSHIHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VICTOR COMPANY OF JAPAN
15 patentsUS5406095AApr 11, 1995
Light emitting diode array and production method of the light emitting diode
VICTOR COMPANY OF JAPAN158 citations96
US5191408AMar 2, 1993
Color imaging system with selectively openable optical shutter
VICTOR COMPANY OF JAPAN23 citations92
US5161007ANov 3, 1992
Recording head with carrier generation and transport layers adjacent a photo-modulation layer for recording information included in an electro-magnetic radiation-beam applied thereto
VICTOR COMPANY OF JAPAN31 citations92
US5315410AMay 24, 1994
Method and apparatus for recording optical information by using a photoelectric transducer
VICTOR COMPANY OF JAPAN28 citations91
US5408341AApr 18, 1995
Method and apparatus for recording optical information in a photoelectric transducer controlled by a sensed condition thereof
VICTOR COMPANY OF JAPAN16 citations82
US5214457AMay 25, 1993
Reflective overhead projector with light-to-light converter
VICTOR COMPANY OF JAPAN20 citations82
US5367359ANov 22, 1994
Plate-making method and plate-making apparatus for printing
VICTOR COMPANY OF JAPAN10 citations74
US5430705AJul 4, 1995
Method and apparatus for recording and reproducing main and sub information
VICTOR COMPANY OF JAPAN5 citations63
US5319461AJun 7, 1994
Recording medium and recording apparatus wherein voltage is applied only to peripheral edges of the recording medium
VICTOR COMPANY OF JAPAN3 citations63
US5313288AMay 17, 1994
Recording medium and recording/reproduction apparatus thereof
VICTOR COMPANY OF JAPAN5 citations63
US5422663AJun 6, 1995
Image formation and erasure on and from scattering-mode light-modulation device
VICTOR COMPANY OF JAPAN1 citations52
US5315318AMay 24, 1994
Image formation and erasure on and from scattering-mode light-modulation device
VICTOR COMPANY OF JAPAN1 citations52
US5241376AAug 31, 1993
Cinematographic system
VICTOR COMPANY OF JAPAN1 citations52
US5151781ASep 29, 1992
Method of recording color image information
VICTOR COMPANY OF JAPAN1 citations52
US5337078AAug 9, 1994
Apparatus and method for recording information carried by electro-magnetic radiation beam
VICTOR COMPANY OF JAPAN0 citations42
HITACHI LTD
8 patentsUS5598373AJan 28, 1997
Semiconductor memory system
HITACHI LTD29 citations91
US5440521AAug 8, 1995
Semiconductor integrated circuit device
HITACHI LTD23 citations91
US4752819AJun 21, 1988
Semiconductor integrated circuit device having a carrier trapping trench arrangement
HITACHI LTD17 citations82
US4658283AApr 14, 1987
Semiconductor integrated circuit device having a carrier trapping trench arrangement
HITACHI LTD20 citations82
US5805513ASep 8, 1998
Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor
HITACHI LTD15 citations81
US5426613AJun 20, 1995
Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor
HITACHI LTD18 citations81
US5217917AJun 8, 1993
Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor
HITACHI LTD11 citations72
US5151772ASep 29, 1992
Semiconductor integrated circuit device
HITACHI LTD6 citations63