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USPTO Patent Rankings Data through Dec 31, 2025
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Junji Ohki — 5 Patents

PCPolymatech Co.: 3 patents #22 of 84Top 30%
YCYuki Gosei Kogyo Co.: 2 patents #16 of 36Top 45%
JTJapan Tobacco: 1 patents #582 of 1,187Top 50%
Tokyo, JP: #26,440 of 90,295 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Junji Ohki has been granted 5 US patents while listed as an inventor at Polymatech Co.. The first was granted in 1992 and the most recent in May 2011. Junji Ohki ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Junji Ohki in Tokyo, JP.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7934709 Viscous fluid-sealed damper Rie Miyakosawa 2011-05-03
7837183 Viscous fluid-filled damper 2010-11-23
7549619 Viscous fluid-filled damper and mounting structure for viscous fluid-filled damper 2009-06-23
5264561 Method of manufacturing 2',3'-dideoxy-2',3'-didehydronucleosides Takashi Ebata, Hajime Matsushita, Nobuhiro Mizutani, Junko Tanaka, Hiromi Kaibara +1 more 1993-11-23
5166327 Process for producing 3'-deoxy-3-'-fluorothymidine Kazuo Itoh, Nobuhiro Mizutani, Shigeki Higuchi, Junko Tanaka 1992-11-24