YT

Yasuhiko Tanaka

FC Fuji Photo Optical Co.: 28 patents #6 of 509Top 2%
Fujitsu Limited: 14 patents #2,150 of 24,456Top 9%
KC Konishiroku Photo Industry Co.: 9 patents #85 of 894Top 10%
TW The Japan Steel Works: 9 patents #11 of 643Top 2%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
PA Panasonic: 5 patents #5,165 of 21,108Top 25%
AE Aida Engineering: 4 patents #24 of 163Top 15%
Sharp Kabushiki Kaisha: 4 patents #3,475 of 10,731Top 35%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
OC Olympus Optical Co.: 1 patents #1,517 of 2,334Top 65%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
HC Hitachi Industrial Equipment Systems Co.: 1 patents #318 of 550Top 60%
TI Toray Industries: 1 patents #2,000 of 3,690Top 55%
ME Mistubishi Electric: 1 patents #1 of 47Top 3%
KO Konica: 1 patents #1,290 of 1,958Top 70%
Overall (All Time): #22,676 of 4,157,543Top 1%
80
Patents All Time

Issued Patents All Time

Showing 26–50 of 80 patents

Patent #TitleCo-InventorsDate
6435739 Camera having a spring loaded mechanism for driving a light-shielding door member 2002-08-20
6419453 Steam turbine rotor shaft Yutaka Fukui, Hiroyuki Doi, Masahiko Arai, Ryo Hiraga, Kenichiro Nomura +1 more 2002-07-16
6382081 Reciprocating compressor Ikutomo Umeoka, Ichiro Kita, Masataka Oda 2002-05-07
6356717 Flexible circuit board Minoru Ishiguro, Yukio Okazaki 2002-03-12
6341201 Remotely controllable camera system Minoru Ishiguro, Fumio Iwai, Yasuhiro Nishitani, Kazuhisa Horikiri 2002-01-22
6206683 Molding device Yuji Takahashi, Hideo Itakura, Yasuhiko Oyamada 2001-03-27
6206655 Electrically-operated sealed compressor Ichiro Kita, Ikutomo Umeoka 2001-03-27
6025329 Method for treating ophthalmic diseases Jun Utsumi, Tetsuo Sudo, Mizuo Matsui 2000-02-15
6012908 Electrically operated seal compressor having a refrigerant flow branch tube with a chamber disposed in the vicinity of a suction port Ichiro Kita, Ikutomo Umeoka 2000-01-11
5930539 Finder visual field changing mechanism 1999-07-27
5911842 Heat resisting steel and steam turbine rotor shaft and method of making thereof Masao Shiga, Kishio Hidaka, Norio Yamada, Shigeyoshi Nakamura, Yutaka Fukui +6 more 1999-06-15
5909328 Magnetic recording device and camera with magnetic recording device Yukitaka Takeshita 1999-06-01
5897234 Camera having film support plate and cartridge chamber cover for providing a film passageway 1999-04-27
5835805 Film transporting device of camera and clutch structure and camera with magnetic recording function Toshihiko Izaki 1998-11-10
5784660 Mounting structure of a film passage forming plate for a photographic camera 1998-07-21
5752120 Mechanism for opening and closing a film chamber of a photographic camera 1998-05-12
5721645 Optical instrument with movable lens barrel Hiroyuki Iwasaki 1998-02-24
5716468 Process for producing high-and low-pressure integral-type turbine rotor Yasumi Ikeda, Tsukasa Azuma, Masayuki Yamada, Yoichi Tsuda 1998-02-10
5708898 Camera having a front cover Mitsuo Manabe 1998-01-13
5708897 Camera having a grip Mitsuo Manabe 1998-01-13
5678081 Photographic camera having a picture size switching device 1997-10-14
5669026 Camera having push button which presses circuit board mounted in film restraining plate 1997-09-16
5619740 Apparatus for preventing film perforation damage during loading Kazuhiko Onda 1997-04-08
5596384 Film feeder that reduces film tension Minoru Takahashi 1997-01-21
5524019 Electrode for electroslag remelting and process of producing alloy using the same Tomoo Takenouchi, Yoshiaki Ichinomiya, Junji Ishizaka, Junji Itagaki, Shuzo Ohhashi +1 more 1996-06-04