HO

Hirofumi Ohtani

KO Konica: 13 patents #144 of 1,958Top 8%
KC Konishiroku Photo Industry Co.: 2 patents #360 of 894Top 45%
Merck: 2 patents #3,919 of 9,382Top 45%
KM Konica Minolta: 1 patents #1,862 of 2,718Top 70%
Overall (All Time): #253,179 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11507649 Optical fingerprint authentication device Kazuyoshi Omata, Tsukasa Yagi, Natsuki Yamamoto 2022-11-22
10853465 Optical fingerprint authentication device Kazuyoshi Omata, Tsukasa Yagi, Natsuki Yamamoto 2020-12-01
9929379 Method for producing organic electroluminescent element Yoriko Nakayama 2018-03-27
5541052 Silver halide photographic material having improved keeping quality Hiroshi Okusa, Syoji Matsuzaka 1996-07-30
5523202 Silver halide emulsion and process for its preparation Sadayasu Ishikawa, Yoshikazu Ito 1996-06-04
5518874 Method of manufacturing a silver halide emulsion Yoshiro Ito, Syoji Matsuzaka 1996-05-21
5362470 Ultrafine gold and/or silver chalcogenide and production thereof Haruhiko Masutomi, Naoko Uchida, Kazuyoshi Ichikawa 1994-11-08
5362619 High-speed halide photographic light-sensitive material Kouji Tashiro, Hiroyuki Hoshino, Shuji Murakami, Shoji Matsuzaka 1994-11-08
5358841 Method for preparing a silver halide emulsion 1994-10-25
5340710 Photosensitive silver halide photographic material Yukio Ohya, Syoji Matsuzaka, Yasushi Irie, Shuji Murakami, Satomi Asano +1 more 1994-08-23
5334359 Apparatus for production of sparingly water-soluble salt crystal grains Haruhiko Masutomi, Naoko Uchida, Chikao Mamiya 1994-08-02
H1196 Color photographic light-sensitive material excellent in color Fumie Fukazawa, Katuya Yabuuchi 1993-06-01
5200308 Color photographic material Hiroshi Shimazaki, Yoshitaka Yamada 1993-04-06
5041366 Silver halide photographic material Satomi Asano, Hiroshi Okusa, Nobuaki Kagawa, Syoji Matsuzaka 1991-08-20
5039601 Silver halide emulsions with silver halide grain groups of different desensitizing agent content Yukio Ohya, Syoji Matsuzaka, Yoshiro Ito, Mineko Ito 1991-08-13
4996140 Silver halide photographic material Tomoyuki Nakayama, Hiroyuki Hoshino, Syoji Matsuzaka 1991-02-26
4704351 Dye sensitized light-sensitive core/shell silver halide photographic material Hideki Takiguchi, Yoshitaka Yamada, Hiroshi Kashiwagi 1987-11-03
4701405 Dye-sensitized light-sensitive core/shell silver halide photographic material Hideki Takiguchi, Yoshitaka Yamada, Hiroshi Kashiwagi 1987-10-20