AA

Akihiro Arai

PE Pentax: 28 patents #47 of 761Top 7%
Canon: 26 patents #2,250 of 19,416Top 15%
PA Panasonic: 24 patents #737 of 21,108Top 4%
SH Shimadzu: 13 patents #92 of 2,007Top 5%
Sumitomo Electric Industries: 11 patents #2,408 of 21,551Top 15%
AK Asahi Kogaku Kogyo K.K.: 5 patents #14 of 180Top 8%
TK Tokyo Kogaku Kikai: 3 patents #27 of 143Top 20%
SO Sony: 2 patents #12,963 of 25,231Top 55%
TO Topcon: 2 patents #309 of 684Top 50%
AK Asahi Kogaku Kabushiki Kaisha: 1 patents #9 of 73Top 15%
Overall (All Time): #10,812 of 4,157,543Top 1%
115
Patents All Time

Issued Patents All Time

Showing 101–115 of 115 patents

Patent #TitleCo-InventorsDate
4920368 Built-in flash system Tetsuji Shono 1990-04-24
4910542 Single-lens reflex camera with built-in flash Masato Yamamoto, Susumu Koshino, Toshimasa Yamanaka, Koji Sato, Masahiro Koinuma 1990-03-20
4905034 Automatic focusing projector Yasuyuki Tejima, Hideaki Yuda, Saburoh Sugawara, Shigeo Tohji 1990-02-27
4893140 Single-lens reflex camera with built-in flash Masato Yamamoto, Susumu Koshino, Toshimasa Yamanaka, Koji Sato, Masahiro Kionuma 1990-01-09
4860043 Apparatus for kinematic linkage in interchangeable lens type of camera Hiroshi Kurei, Takumi Kobayashi 1989-08-22
4828385 Autolensmeter Yasufumi Fukuma 1989-05-09
4810085 Corneal configuration measuring apparatus Yasufumi Fukuma, Yoshinori Oana 1989-03-07
4796989 Opthalmological measuring apparatus Yasufumi Fukuma, Yoshinori Oana 1989-01-10
4212525 Release device in a camera having a motor drive unit Fumio Urano, Takumi Kobayashi, Eiji Yamamori, Junji Umetsu 1980-07-15
4209247 Environmentally protected camera with an interchangeable drawing type finder Fumio Urano, Takumi Kobayashi, Eiji Yamamori, Norimichi Takahashi, Junji Umetsu 1980-06-24
4202617 Shutter release security device in motor drive camera Fumio Urano, Takumi Kobayashi, Junji Umetsu 1980-05-13
4195925 Diaphragm-operating device for use in an interchangeable-lens type camera Haruo Ishii 1980-04-01
4194824 Camera equipped with automatic unwinding device Eiji Yamamori 1980-03-25
4191463 Counter device for multiple exposure in a camera Fumio Urano, Keisuke Haraguchi 1980-03-04
4190339 Retracting and raising type mirror drive device in single-lens reflex camera 1980-02-26