Hamao Umezawa

ZK Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai: 99 patents #2 of 194Top 2%

NK Nippon Kayaku: 12 patents #24 of 1,103Top 3%

SC Sanraku-Ocean Co.: 10 patents #3 of 40Top 8%

YC Yamanouchi Pharmaceutical Co.: 6 patents #55 of 516Top 15%

SI Sanraku Incorporated: 5 patents #8 of 48Top 20%

MF Microbial Chemistry Research Foundation: 5 patents #6 of 110Top 6%

BR Bristol-Meyers: 3 patents #98 of 350Top 30%

KK Kirin Beer Kabushiki Kaisha: 3 patents #42 of 379Top 15%

BC Banyu Pharmaceutical Co.: 3 patents #115 of 330Top 35%

TC Takara Shuzo Co.: 2 patents #97 of 264Top 40%

KC Kowa Company: 2 patents #203 of 562Top 40%

KC Kanegafuchi Chemical Industry Co.: 2 patents #49 of 179Top 30%

Overall (All Time): #6,149 of 4,157,543Top 1%

151

Patents All Time

Issued Patents All Time

Showing 151–151 of 151 patents

Patent #	Title	Co-Inventors	Date
4185156	Peptides and acid addition salts thereof	Takaaki Aoyagi, Tomio Takeuchi, Tetsushi Saino, Michinori Koyama	1980-01-22