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 76–80 of 80 patents

Patent #TitleCo-InventorsDate
4558326 Purging system for ink jet recording apparatus Yoshiaki Kimura 1985-12-10
4548259 Liquid containing vessel with temperature control device Sadao Tezuka, Kunihiko Matsumura, Tadao Yamamoto, Nobuyoshi Suzuki, Toshio Tsurukawa 1985-10-22
4521788 Ink jet printing head Yoshiaki Kimura, Taketo Nozu 1985-06-04
4276854 Apparatus for detecting toner density Hisao Fujita, Isao Kobayashi, Ken Nakamura 1981-07-07
4251999 Defrosting control system 1981-02-24