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

Hiroshi Iwasa — 34 Patents

Nsk: 13 patents #98 of 1,559Top 7%
Sony: 9 patents #4,874 of 25,231Top 20%
DCDainippon Screen Mfg. Co.: 5 patents #152 of 977Top 20%
FHFuji Oil Holdings: 2 patents #101 of 368Top 30%
HCHitachi Consumer Electronics Co.: 2 patents #119 of 447Top 30%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
SCScreen Holdings Co.: 1 patents #452 of 686Top 70%
Overall (All Time): #102,377 of 4,157,543Top 3%
34 Patents All Time

Issued Patents All Time

Showing 26–34 of 34 patents

Patent #TitleCo-InventorsDate
5611250 Rolling/sliding part Hiroshi Narai, Satoshi Kadokawa, Yasuyuki Shimazaki 1997-03-18
5539444 Apparatus for recording an image by irradating a plurality of light beams on a recording surface Masahide Ikeda 1996-07-23
5520987 Rolling/sliding member Hiroshi Narai, Satoshi Kadokawa, Yasuo Murakami 1996-05-28
5477259 Multiple beam scanning apparatus, light source unit, and method of manufacturing the same 1995-12-19
5456538 Roller bearing Toshiharu Honda, Moichi Chiba, Yasuo Murakami, Toshiyuki Yamamoto, Yasuyuki Shimazaki 1995-10-10
5419641 Radial needle bearing Makoto Fujinami, Katsuhiro Ikezawa, Moichi Chiba 1995-05-30
5361648 Rolling-sliding mechanical member Yasuo Murakami, Yasuo Utsumi, Shoji Noguchi, Yasuyuki Shimasaki, Satoshi Kadokawa 1994-11-08
5298271 Method of preventing edible oils and fats from deteriorating Shoichi Takashina, Takashi Hazama, Akira Kurooka, Norio Maruguchi, Masayoshi Saito 1994-03-29
4795569 Method for dry fractionation of fatty material Kiyoyuki Higuchi, Hirokazu Maeda, Hiroshi Hidaka, Yoshitaka Ebihara, Kazuhito Asahara +1 more 1989-01-03