Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
HH

Hirofumi Hayata

KOKonica: 17 patents #83 of 1,958Top 5%
KMKonica Minolta: 14 patents #86 of 1,361Top 7%
KMKonica Minolta: 5 patents #737 of 2,718Top 30%
Fuchu, JP: #22 of 926 inventorsTop 3%
Overall (All Time): #93,106 of 4,157,543Top 3%
36 Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
6027845 Electrophotography photosensitive element Akira Kinoshita, Toyoko Shibata, Tomoko Suzuki 2000-02-22
5942359 Electrophotoreceptor Akira Kinoshita, Toyoko Shibata, Tomoko Suzuki 1999-08-24
5849444 Electrophotographic photoreceptor with aliphatic amine containing electron transporting layer Akira Kinoshita, Toyoko Shibata, Tomoko Suzuki 1998-12-15
5718997 Electrophotographic photoreceptor Akira Kinoshita, Toyoko Shibata, Tomoko Suzuki 1998-02-17
5589314 Image forming method using an imidazole-perylene electrophotographic photoreceptor Yoshihiko Etoh, Takeo Oshiba, Asao Matsushima, Tomoo Sakimura, Tomoko Suzuki +1 more 1996-12-31
5589309 Electrophotographic photoreceptor containing perylenes Tomoko Suzuki, Akira Kinoshita, Tomoo Sakimura 1996-12-31
5270140 Bisstyryl compound and the electrophotographic photoreceptors relating thereto Naoto Abew, Naohiro Hirose, Syozo Mitsui, Shinichi Suzuki, Osamu Sasaki +2 more 1993-12-14
5166022 Electrophotographic photoreceptor Shinichi Suzuki, Osamu Sasaki 1992-11-24
5080990 Electrophotographic photoreceptor having charge transport material Shinichi Suzuki, Osamu Sasaki 1992-01-14
5079119 Photoreceptor Shinichi Suzuki, Osamu Sasaki 1992-01-07
5077163 Electrophotographic photoreceptor Osamu Sasaki, Shinichi Suzuki 1991-12-31