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Sadayasu Ishikawa — 18 Patents

KOKonica: 18 patents #72 of 1,958Top 4%
Tokyo, JP: #8,479 of 90,295 inventorsTop 10%
Overall (All Time): #245,716 of 4,157,543Top 6%
18 Patents All Time
Sadayasu Ishikawa has been granted 18 US patents while listed as an inventor at Konica. The first was granted in 1990 and the most recent in September 2003. Sadayasu Ishikawa ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Sadayasu Ishikawa in Tokyo, JP.

Patents per Year

Patents granted per year, 1990 to 2003Bar chart with a peak of 3 patents in 1994.peak 31990: 1 patents19901993: 1 patents1994: 3 patents19941995: 2 patents1996: 2 patents19961998: 1 patents1999: 1 patents19992000: 2 patents2001: 2 patents20012002: 2 patents2003: 1 patents2003

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
6623917 Silver halide photographic emulsion Katsuhiko Suzuki, Hiroshi Takada 2003-09-23
6432626 Silver halide emulsion and silver halide color photographic material Hideo Sugimoto 2002-08-13
6395464 Silver halide emulsion Katsuhiko Suzuki, Hiromoto Il 2002-05-28
6245498 Silver halide emulsion Katsuhiko Suzuki, Hiromoto Ii 2001-06-12
6171738 Method of preparing silver halide emulsion Hiroshi Takada, Satoshi Ito 2001-01-09
6120980 Silver halide emulsion and silver halide color photographic material by use thereof Hiromoto Ii, Rieko Ren 2000-09-19
6080537 Silver halide emulsion, preparation method thereof and silver halide photographic material Hideo Sugimoto 2000-06-27
5906914 Silver halide light sensitive photographic material Kumiko Taguchi 1999-05-25
5744296 Silver halide color photographic light-sensitive material Katsuhiko Suzuki 1998-04-28
H1594 Silver halide color photographic light-sensitive material Tadanobu Sekiya 1996-09-03
5523202 Silver halide emulsion and process for its preparation Hirofumi Ohtani, Yoshikazu Ito 1996-06-04
5460936 Silver halide photographic emulsion and silver halide photographic light-sensitive material Toshiya Kondo 1995-10-24
5380640 Silver halide photographic emulsion and silver halide photographic light-sensitive material using the same Toshiya Kondo 1995-01-10
5372975 Silver halide photographic emulsion Hiroshi Takada, Toshiya Kondo 1994-12-13
5362618 Silver halide photographic light-sensitive material Shigetami Kasai, Yasuo Honda 1994-11-08
5358842 Silver halide photographic light-sensitive material Shigetami Kasai, Tadanobu Sekiya 1994-10-25
5273871 Silver halide photographic emulsion and silver halide color photographic light-sensitive material incorporating it Hiroshi Takada, Shoji Matsuzaka 1993-12-28
4963467 Silver halide photographic emulsion Masaru Tsukamoto, Toshihiko Yagi 1990-10-16

Frequent Collaborators

Hiroshi Takada4 shared
Katsuhiko Suzuki4 shared
Toshiya Kondo3 shared
Shigetami Kasai2 shared
Hiromoto Ii2 shared
Hideo Sugimoto2 shared

Nearby-Ranked Inventors

Takuma Inami18
Daniel Mills18
Jeffrey J. Beaver18
Atilhan Manay18
Chung-Wen Lo18
Andrew KENNEDY18
Max Heimel18
Kevin Skadron18
John B. Halander18