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 51–75 of 80 patents

Patent #TitleCo-InventorsDate
5502523 Inverted Galilean finder for camera Kazunori Ohno 1996-03-26
5487082 Electrode for electroslag remelting and process of producing alloy using the same Tomoo Takenouchi, Yoshiaki Ichinomiya, Junji Ishizaka, Junji Itagaki, Shuzo Ohhashi +1 more 1996-01-23
5444732 Electrode for electroslag remelting and process of producing alloy using the same Tomoo Takenouchi, Yoshiaki Ichinomiya, Junji Ishizaka, Junji Itagaki, Shuzo Ohhashi +1 more 1995-08-22
5353077 Photographic camera having also function of panoramic photographing Ken Ishioka, Mitsuo Yokota 1994-10-04
5349407 Film transporting system including a counter and a film existence detector for a photographic camera Tatsuo Saito, Haruo Onozuka 1994-09-20
5250998 Fixing apparatus having two nip regions Masato Ueda, Tadashi Miwa, Satoshi Haneda, Kiyoaki Kawamoto, Tetsuko Omoto +3 more 1993-10-05
5184166 Self-photographing method for cameras Michihiro Shiina, Fumio Iwai, Yukio Noguchi, Takao Umetsu, Tatsuo Saito +3 more 1993-02-02
5136313 Film initial-advance apparatus for camera Katsuji Muramatsu, Hiroshi Nakamura, Mashasi Takamura 1992-08-04
5099264 Film initial-advance apparatus for camera Katsuji Muramatsu, Hiroshi Nakamura, Mashasi Takamura 1992-03-24
5086312 Variable focal length camera with focus adjusting device Takao Koda, Yoshihiro Ide, Akio Ohmiya, Masanoshin Komori, Masaya Nozawa +2 more 1992-02-04
4980711 Camera with zooming mechanism Hiroshi Komatsuzaki, Nobuhiro Aoki, Masaya Nozawa, Syunji Nashimura, Kazuhiro Akiyama +2 more 1990-12-25
4925735 Resin composition for heat-sensitive transfer recording medium and heat-sensitive transfer recording medium Kunihiro Koshizuka, Masao Asano, Toshiaki Tezuka, Tatsuichi Maehashi 1990-05-15
D303173 Vacuum cleaner Isshin Miyamoto, Yasuo Nagamatsu, Masaharu Sakamoto, Masataka Hidaka, Hideaki Sakamoto +1 more 1989-08-29
4829328 Camera Fumio Iwai, Hideo Kobayashi, Hiroshi Komatsuzaki 1989-05-09
4812866 Photographic film package Seimei Ushiro, Hiroshi Ohmura, Michio Cho, Tsutomu Tanaka, Seiji Asano +1 more 1989-03-14
4799073 Lens shifting mechanism Seiji Asano 1989-01-17
4781551 Rotary compressor with low-pressure and high-pressure gas cut-off valves 1988-11-01
4769654 Ink jet printing head having plurality of ink-jetting units disposed parallel to circular-shaped reference plane Yoshiaki Kimura 1988-09-06
D291449 Typewriter Isshin Miyamoto, Yasuo Nagamatsu, Masataka Hidaka, Masaharu Sakamoto, Hideaki Sakamoto 1987-08-18
D291324 Typewriter Isshin Miyamoto, Yasuo Nagamatsu, Masaharu Sakamoto, Masataka Hidaka, Hideaki Sakamoto 1987-08-11
4668965 Method of purging impurities from a printing head Yoshiaki Kimura 1987-05-26
4660057 Heater power controller for ink jet printer Masato Watanabe, Kiyotaka Murakami 1987-04-21
4609925 Method for removing air bubbles or solid impurities from the printing head of a drop-on-demand type ink jet printer Taketo Nozu, Yoshiaki Kimura 1986-09-02
4604633 Ink-jet recording apparatus Yoshiaki Kimura 1986-08-05
D282655 Telephone answering machine Noriaki Kaku, Haruzi Nakamura, Kazuo Ishida 1986-02-18