SY

Seiichi Yasukawa

NI Nikon: 40 patents #61 of 2,493Top 3%
NK Nippon Kogaku K.K.: 2 patents #156 of 382Top 45%
Overall (All Time): #74,105 of 4,157,543Top 2%
42
Patents All Time

Issued Patents All Time

Showing 26–42 of 42 patents

Patent #TitleCo-InventorsDate
5291238 Photometering circuit 1994-03-01
5276320 Photometering device 1994-01-04
5231448 Photometric apparatus for a camera Toshihiro Sato, Masaru Muramatsu, Ken Utagawa, Tadao Takagi, Shinichi Suzuki 1993-07-27
5227836 TTL automatic light controlling camera system Norikazu Yokonuma 1993-07-13
5221941 TTL multiple flash control device Akihiro Matsui 1993-06-22
5189466 Information setting apparatus in a camera Takashi Saegusa 1993-02-23
5177526 System for inputting information into camera Nobuaki Sasagaki 1993-01-05
5168300 TTL automatic flash control device 1992-12-01
5164759 TTL automatic flash control camera 1992-11-17
5084720 Camera accessory having data communication and printing capability Takashi Saegusa, Tetsuro Goto 1992-01-28
5079573 Camera Takashi Saegusa, Tetsuro Goto 1992-01-07
5049917 Camera system Tetsuro Goto, Takashi Saegusa, Tsutomu Wakabayashi, Norikazu Yokonuma 1991-09-17
5001503 Camera Takashi Saegusa, Tetsuro Goto 1991-03-19
4942413 Camera Takashi Saegusa, Tetsuro Goto 1990-07-17
4918481 Camera capable of bracketing exposure Takashi Saegusa, Tsutomu Wakabayashi 1990-04-17
4750013 Automatic focus adjustment camera 1988-06-07
4482235 Automatic focusing device for camera Nobuhiko Terui, Toru Fukuhara 1984-11-13