YK

Yoshihisa Koyama

VJ Victor Company Of Japan: 15 patents #65 of 1,489Top 5%
HI Hitachi: 8 patents #5,191 of 28,497Top 20%
HE Hitachi Vlsi Engineering: 6 patents #133 of 666Top 20%
HS Hitachi Hokkai Semiconductor: 1 patents #44 of 98Top 45%
HE Hitachi Micro Computer Engineering: 1 patents #131 of 393Top 35%
HE Hitachi Microcomputer Eng.: 1 patents #7 of 42Top 20%
Overall (All Time): #186,933 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
5805513 Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor Yasushi Takahashi, Hidetoshi Iwai, Satoshi Oguchi, Hisashi Nakamura, Hiroyuki Uchiyama +10 more 1998-09-08
5598373 Semiconductor memory system Shoji Wada, Kanehide Kenmizaki, Masaya Muranaka, Masahiro Ogata, Hidetomo Aoyagi +8 more 1997-01-28
5440521 Semiconductor integrated circuit device Manabu Tsunozaki, Kyoko Ishii, Koichi Nozaki, Hiroshi Yoshioka, Shinji Udo +4 more 1995-08-08
5430705 Method and apparatus for recording and reproducing main and sub information Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1995-07-04
5426613 Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor Yasushi Takahashi, Hidetoshi Iwai, Satoshi Oguchi, Hisashi Nakamura, Hiroyuki Uchiyama +10 more 1995-06-20
5422663 Image formation and erasure on and from scattering-mode light-modulation device Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Hiroyuki Bonde 1995-06-06
5408341 Method and apparatus for recording optical information in a photoelectric transducer controlled by a sensed condition thereof Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1995-04-18
5406095 Light emitting diode array and production method of the light emitting diode Taku Katayama, Katsuhiko Morita, Masashi Yoshimura, Toshiki Yoshida, Manabu Endo 1995-04-11
5367359 Plate-making method and plate-making apparatus for printing Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1994-11-22
5337078 Apparatus and method for recording information carried by electro-magnetic radiation beam Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1994-08-09
5319461 Recording medium and recording apparatus wherein voltage is applied only to peripheral edges of the recording medium Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1994-06-07
5315410 Method and apparatus for recording optical information by using a photoelectric transducer Itsuo Takanshi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1994-05-24
5315318 Image formation and erasure on and from scattering-mode light-modulation device Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Hiroyuki Bonde 1994-05-24
5313288 Recording medium and recording/reproduction apparatus thereof Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1994-05-17
5241376 Cinematographic system Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1993-08-31
5217917 Semiconductor memory device with improved substrate arrangement to permit forming a plurality of different types of random access memory, and a testing method therefor Yasushi Takahashi, Hidetoshi Iwai, Satoshi Oguchi, Hisashi Nakamura, Hiroyuki Uchiyama +10 more 1993-06-08
5214457 Reflective overhead projector with light-to-light converter Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1993-05-25
5191408 Color imaging system with selectively openable optical shutter Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama +5 more 1993-03-02
5161007 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 Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1992-11-03
5151781 Method of recording color image information Itsuo Takanashi, Shintaro Nakagaki, Tsutou Asakura, Masato Furuya, Yuji Uchiyama 1992-09-29
5151772 Semiconductor integrated circuit device Yasushi Takahashi, Hiromi Matsuura, Masaya Muranaka, Katsutaka Kimura, Kazuyuki Miyazawa +2 more 1992-09-29
4752819 Semiconductor integrated circuit device having a carrier trapping trench arrangement 1988-06-21
4658283 Semiconductor integrated circuit device having a carrier trapping trench arrangement 1987-04-14