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

Yoichi Ozawa — 72 Patents

Bridgestone: 50 patents #18 of 2,860Top 1%
EIEisai: 7 patents #173 of 998Top 20%
ECEisai R&D Management Co.: 5 patents #139 of 817Top 20%
ACAjinomoto Co.: 5 patents #360 of 2,190Top 20%
JSJsr: 4 patents #275 of 1,137Top 25%
RIRiken: 2 patents #375 of 1,824Top 25%
PCPrism Pharma Co.: 1 patents #4 of 9Top 45%
Tsukuba, OH: #1 of 1 inventorsTop 100%
Overall (All Time): #27,652 of 4,157,543Top 1%
72 Patents All Time

Issued Patents All Time

Showing 51–72 of 72 patents

Patent #TitleCo-InventorsDate
6437205 Low molecular weight high-cis polybutadienes and their use in high molecular weight-low molecular weight high-cis polybutadiene blends H. Jerrold Miller, Tatsuro Hamada, Peyman Pakdel 2002-08-20
6326035 Method for the separation of rapeseed germ and rapeseed germ oil Akihiro Nakatani, Toru Nakamura, Yasushi Morinaga, Masayoshi Naruse 2001-12-04
6201080 Preparation of syndiotactic 1, 2-polybutadiene using a chromium-containing catalyst system Steven Luo, James E. Hall, Jung W. Kang 2001-03-13
6084025 Reduced hysteresis products prepared with anionic polymerization initiators Takashi Kitamura, David F. Lawson, Koichi Morita 2000-07-04
6025450 Amine containing polymers and products therefrom David F. Lawson, Mark L. Stayer, Jr., David Saffles, Koichi Morita, Ryota Fujio +1 more 2000-02-15
5959048 Soluble anionic polymerization initiators for preparing functionalized polymer David F. Lawson, James E. Hall 1999-09-28
5883183 Reduced hysteresis products prepared with anionic polymerization initiators Takashi Kitamura, David F. Lawson, Koichi Morita 1999-03-16
5767283 7-Amino-1H-indoles Hiroshi Yoshino, Takashi Owa, Tatsuo Okauchi, Kentaro Yoshimatsu, Naoko Sugi +3 more 1998-06-16
5723533 Soluble anionic polymerization initiators and products therefrom David F. Lawson, James E. Hall 1998-03-03
5721246 Heterobicyclic sulfonamide and sulfonic ester derivatives Hiroshi Yoshino, Takashi Owa, Tatsuo Okauchi, Kentaro Yoshimatsu, Naoko Sugi +3 more 1998-02-24
5700874 Alkoxysilane-modified polymer and adhesive composition using said polymer Hideo Takeichi, Sei Aoki, Takashi Shimizu 1997-12-23
5674798 Hydrocarbon soluble anionic polymerization initiators Takashi Kitamura, David F. Lawson, Koichi Morita 1997-10-07
5643848 Soluble anionic polymerization initiators and products therefrom David F. Lawson, James E. Hall 1997-07-01
5625017 Process for preparing a polymer using lithium initiator prepared by in situ preparation Koichi Morita, Atsushi Nakayama, Ryota Fujio 1997-04-29
5585443 Block copolymer Hideo Takeichi 1996-12-17
5578542 Soluble anionic polymerization initiators and method of preparing same David F. Lawson, James E. Hall 1996-11-26
5552499 Process of preparing reduced hysteresis products using anionic polymerization initiators Takashi Kitamura, David F. Lawson, Koichi Morita 1996-09-03
5514753 Process for preparing a block copolymer Ryota Fujio 1996-05-07
5393721 Anionic polymerization initiators and reduced hysteresis products therefom Takashi Kitamura, David F. Lawson, Koichi Morita 1995-02-28
5329005 Soluble anionic polymerization initiators and preparation thereof David F. Lawson, Koichi Morita, Mark L. Stayer, Jr., Ryota Fujio 1994-07-12
4618695 Method of preparing methyl ester and its hydrochloride Shinichi Kishimoto, Emiko Shinohara, Tadashi Takemoto, Chikahiko Eguchi 1986-10-21
4606854 Method of preparing .alpha.-L-aspartyl-L-phenylalanine methyl ester and its hydrochloride Shinichi Kishimoto, Emiko Shinohara, Tadashi Takemoto, Chikahiko Eguchi 1986-08-19