IH

Isamu Hirai

PE Pentax: 4 patents #17 of 186Top 10%
Overall (1994): #6,032 of 165,921Top 4%
4
Patents 1994

Issued Patents 1994

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5351105 Auto focus camera 1994-09-27
5325147 Exposure control apparatus of a camera Tadayuki Kirigaya, Hideaki Tsuji, Nobuhiko Matsudo 1994-06-28
5289225 Photometering apparatus of camera for variably weighting different areas of an image area 1994-02-22
5280319 Exposure control apparatus of camera including exposure factor limit value setting means Osamu Sato, Satoshi Nakano, Toshiyuki Kitazawa, Takayuki Sensui, Masato Yamamoto +3 more 1994-01-18