MY

Masao Yamamoto

Sumitomo Electric Industries: 20 patents #1,058 of 21,551Top 5%
SC Scalar: 19 patents #1 of 11Top 10%
Nsk: 12 patents #112 of 1,559Top 8%
Fujitsu Limited: 10 patents #3,161 of 24,456Top 15%
PA Panasonic: 8 patents #3,315 of 21,108Top 20%
JL Japan Aviation Electronics Industry, Limited: 6 patents #187 of 728Top 30%
Sharp Kabushiki Kaisha: 6 patents #2,623 of 10,731Top 25%
YC Yoshizuka Seiki Co.: 5 patents #2 of 9Top 25%
KT Kabushiki Kaisha Toshiba: 5 patents #5,683 of 21,451Top 30%
NC Nippon Chemiphar Co.: 5 patents #28 of 155Top 20%
Nintendo Co.: 4 patents #436 of 1,476Top 30%
Rohm Co.: 3 patents #810 of 2,292Top 40%
TO Toshiba: 3 patents #380 of 2,688Top 15%
MC Mitsubishi Diamond Industrial Co.: 2 patents #14 of 58Top 25%
MK Mitsubishi Kasei: 2 patents #194 of 911Top 25%
NI Nissan Chemical Industries: 2 patents #451 of 1,150Top 40%
MC Mitsubishi Chemical: 2 patents #928 of 3,022Top 35%
KC Kyodo Yushi Co.: 2 patents #42 of 191Top 25%
SC Sanraku-Ocean Co.: 1 patents #21 of 40Top 55%
SI Sanraku Incorporated: 1 patents #19 of 48Top 40%
UI Ube Industries: 1 patents #895 of 1,686Top 55%
OC Optoelectronics Co.: 1 patents #29 of 61Top 50%
OP Opticon: 1 patents #12 of 40Top 30%
Overall (All Time): #10,525 of 4,157,543Top 1%
117
Patents All Time

Issued Patents All Time

Showing 101–117 of 117 patents

Patent #TitleCo-InventorsDate
5219319 Apparatus for replacing tool sets of powder molding press Takeshi Katagiri, Shiro Shirasaki 1993-06-15
5183811 Glycerol derivative and anti-hypertensive agent Mitsuo Masaki, Hiromitsu Takeda, Toshiro Kamishiro 1993-02-02
5053402 Certain glyceryl phosphate-cyclic ammonium compounds useful for treating hypertension Mitsuo Masaki, Hiromitsu Takeda, Toshiro Kamishiro 1991-10-01
5044233 Depth adjuster for rotary tools such as screwdrivers Kunihiko Tatsu, Masao Torigoe, Syoichi Hongo 1991-09-03
5030414 Nuclear fuel rod Emiko Higashinakagawa, Kazuhiko Machida 1991-07-09
5007116 Portable urinal 1991-04-16
4988158 Image pickup head for image pickup device 1991-01-29
4978666 Optically active piperazine derivative Hiroyuki Nohira, Mitsuo Masaki 1990-12-18
4962096 Heterocyclic glycerol derivatives and their use as anti-hypertensive agents Mitsuo Masaki, Hiromitsu Takeda, Toshiro Kamishiro 1990-10-09
4930851 Image magnifying and pick-up system with lighting light-guide device 1990-06-05
4918005 Method of quantitative assay for vitamin B.sub.12 and reagent for assaying vitamin B.sub.12 Asao Murai 1990-04-17
4897132 Turbine casing formed of a heat resistant austenitic cast steel Takashi Yebisuya, Osamu Watanabe, Masayuki Yamada 1990-01-30
4551975 Actuator Tetsuo Fujiwara 1985-11-12
4493733 Corrosion-resistant non-magnetic steel retaining ring for a generator Takashi Yebisuya, Mituo Kawai, Koichi Tajima 1985-01-15
4463171 Derivatives of macrolide antibiotics Hamao Umezawa, Tomio Takeuchi, Kuniaki Tatsuta, Tomoyuki Ishikura, Rokuro Okamoto +1 more 1984-07-31
4431446 High cavitation erosion resistance stainless steel and hydraulic machines being made of the same Takashi Yebisuya, Mituo Kawai, Kei Honma 1984-02-14
4406698 Martensitic stainless cast steel having high cavitation erosion resistance Takashi Yebisuya, Mituo Kawai, Koichi Tajima 1983-09-27