RY

Ryoichi Yamamoto

Fujitsu Limited: 39 patents #462 of 24,456Top 2%
MI Mitsui Petrochemical Industries: 13 patents #32 of 1,024Top 4%
Sumitomo Electric Industries: 9 patents #3,076 of 21,551Top 15%
KM Konica Minolta: 3 patents #626 of 1,361Top 50%
MC Mitsui Chemicals: 3 patents #648 of 2,279Top 30%
KA Kao: 2 patents #1,388 of 3,221Top 45%
FU Fujifilm: 2 patents #2,431 of 4,519Top 55%
PA Panasonic: 1 patents #13,264 of 21,108Top 65%
DE Denso: 1 patents #6,940 of 11,792Top 60%
TO Toyota: 1 patents #15,335 of 26,838Top 60%
KM Konica Minolta: 1 patents #1,862 of 2,718Top 70%
MC Mitsui Engineering & Shipbuilding Co.: 1 patents #166 of 496Top 35%
NC Natec Co.: 1 patents #2 of 14Top 15%
NC Nippondenso Co.: 1 patents #1,765 of 3,479Top 55%
TK Teisan Kabushiki Kaisha: 1 patents #17 of 27Top 65%
UI Ube Industries: 1 patents #895 of 1,686Top 55%
Overall (All Time): #23,762 of 4,157,543Top 1%
78
Patents All Time

Issued Patents All Time

Showing 51–75 of 78 patents

Patent #TitleCo-InventorsDate
4992336 Magneto-optical recording medium Takashi Yamada 1991-02-12
4975339 Magneto-optical recording medium with at least one protective layer containing platinum and/or palladium Takashi Yamada, Masaaki Nomura, Akira Nahara 1990-12-04
4945661 Dredging apparatus Kiyoshi Kuioka, Koji Inaba, Toyoma Hoshino 1990-08-07
4929320 Method of making magneto-optical recording medium Takashi Yamada, Masaaki Nomura, Satoshi Matsubaguchi, Akira Nahara 1990-05-29
4897320 Magneto-optical recording medium Masaaki Nomura, Takashi Yamada, Akira Nahara 1990-01-30
4837118 Magneto-optical recording medium Masaaki Nomura, Takashi Yamada, Akira Nahara 1989-06-06
4808456 Magneto-optical recording medium and method of making the same Takashi Yamada, Masaaki Nomura, Akira Nahara 1989-02-28
4802160 Optical disk substrate Takashi Yamada, Masaaki Nomura, Akira Nahara 1989-01-31
4789606 Magneto-optical recording medium Takashi Yamada, Masaaki Nomura, Akira Nahara 1988-12-06
4735698 Method of making magneto-optical recording medium Masaaki Nomura, Takashi Yamada, Akira Nahara 1988-04-05
4692501 Process for continuous multi-stage polymerization of olefins Hideo Mineshima, Haruyuki Koda 1987-09-08
4561989 Heat storage material Takahiro Wada, Fumiko Yokotani 1985-12-31
4529638 Thermal insulator Yoshihiro Matsuo, Masanari Mikoda, Yoshihiro Asada 1985-07-16
4525547 Process for producing ethylene copolymer by gaseous phase copolymerization Akifumi Kato, Junichi Yoshida 1985-06-25
4521378 Fluid bed reactor system composed of cylindrical reaction vessel equipped with distribution plate and agitator Mitsunori Ichimura, Katsutoshi Horimoto 1985-06-04
4497724 Solar energy storage materials Teijiro Kitao, Jun-ichiro Setsune, Shoichi Ishihara 1985-02-05
4492725 Composite thermal insulator Shoichi Ishihara, Hiroshi Yoneno 1985-01-08
4449516 Sunlight-energy-storing method Teijiro Kitao, Jun-ichiro Setsune, Shoichi Ishihara 1984-05-22
4446410 Control circuit for a solenoid-operated actuator Toshiaki Yagura, Kenichiro Satoyama, Kazutoshi Morisada, Seietsu Yoshida 1984-05-01
4431558 Heat accumulating material Takahiro Wada 1984-02-14
4426307 Heat accumulative material Takahiro Wada 1984-01-17
4420592 Process for multi-step gaseous phase polymerization of olefins Akifumi Kato, Junichi Yoshida 1983-12-13
4406804 Heat accumulating material Takahiro Wada, Shoichi Ishihara 1983-09-27
4381245 Supercooling inhibitor and process for preparing the same Takahiro Wada, Shoichi Ishihara 1983-04-26
4366123 Anchor agitator for gaseous phase polymerization vessel Akifumi Kato, Nobuhiko Kaneshige 1982-12-28