MM

Masakazu Matsumoto

Canon: 25 patents #2,400 of 19,416Top 15%
NW Nikken Kosakusho Works: 14 patents #1 of 14Top 8%
HI Hitachi: 5 patents #7,555 of 28,497Top 30%
JL Japan Aviation Electronics Industry, Limited: 5 patents #207 of 728Top 30%
Mazda Motor: 3 patents #1,256 of 4,755Top 30%
MI Mitutoyo: 3 patents #276 of 721Top 40%
SC Sanyo Electric Co.: 2 patents #2,557 of 6,347Top 45%
DE Denso: 1 patents #6,940 of 11,792Top 60%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
HO Hoya: 1 patents #757 of 1,290Top 60%
KS Kawai Gakki Seisakusho: 1 patents #113 of 198Top 60%
KC Koito Manufacturing Co.: 1 patents #610 of 1,047Top 60%
Overall (All Time): #35,915 of 4,157,543Top 1%
63
Patents All Time

Issued Patents All Time

Showing 26–50 of 63 patents

Patent #TitleCo-InventorsDate
5784901 Washing machine Shuji Yanase, Toshihiro Tamura, Shigeki Yoshida, Takuya Noro, Naoki Kitayama 1998-07-28
5730562 Clamping apparatus for a spindle of a machine tool Yusaku Yamamoto, Hisashi Ide 1998-03-24
5716173 Tool holder 1998-02-10
5593258 Tool holder Masahiro Taguchi, Yusaku Yamamoto 1997-01-14
5507587 Clamp device for rotary shaft portion 1996-04-16
5439415 Rolling stock ventilator and its control method Haruo Hirikawa, Shinichiroo Ishikawa, Sumio Okuno, Morishige Hattori 1995-08-08
5385424 Clamp device for rotary shaft portion 1995-01-31
5286589 Electrophotographic photosensitive member Shintetsu Go, Kazushi Iuchi, Toshie Miyaji, Hajime Miyazaki, Hideyuki Takai 1994-02-15
5263894 Methods and apparatus for ventilating carriages Haruo Hirakawa, Shinichiroo Ishikawa, Hiroshi Higaki, Atsushi Ikio 1993-11-23
5238765 Electrophotographic photosensitive member Akihiro Senoo, Tetsuro Kanemaru 1993-08-24
5189805 Coordinate measuring machine Keizo Takahashi 1993-03-02
5187874 Coordinate measuring machine with protected origin point blocks Keizo Takahashi 1993-02-23
5137490 Ventilating equipment for railway rolling stock and operating method thereof Shinichirou Ishikawa, Toshiharu Matsuda, Haruo Hirakawa, Hiroshi Higaki, Atsushi Ikio 1992-08-11
5034294 Electrophotographic photosensitive member with compound having electron donor and acceptor portions Shintetsu Go, Kazushi Iuchi, Hajime Miyazaki, Hideyuki Takai 1991-07-23
5024912 5H-dibenzo(A,D) cycloheptanylidene derivative and 5H-dibenzo (A,D) cycloheptenylidene derivative, and electrophotographic photosensitive member using the same Toshie Neishi, Toshihiro Kikuchi, Takao Takiguchi, Koichi Suzuki 1991-06-18
4931371 Electrophotographic photosensitive member Shozo Ishikawa, Wataru Ando, Toshihiro Kikuchi, Itaru Yamazaki 1990-06-05
4830944 Function separated photosensitive member having a diphenylamine derivative disazo charge generation material Shoji Umehara, Takao Takiguchi, Shozo Ishikawa 1989-05-16
4820602 Electrophotographic photosenitive member comprising disazo compounds having non-symetric coupler portions 1989-04-11
4810607 Photosensitive member for electrophotography containing trisazo pigment having pyridylene group in its central skeleton Takao Takiguchi, Hideyuki Takai 1989-03-07
4798777 Electrophotographic member containing vinylene benzocarazole as charge transporting material Takao Takiguchi, Toshihiro Kikuchi 1989-01-17
4788119 Electrophotographic photosensitive member containing a disazo pigment Masataka Yamashita, Hajime Miyazaki, Takao Takiguchi, Masaaki Hiro, Shozo Ishikawa 1988-11-29
4760003 Electrophotographic photosensitive member containing disazo compound Takao Takiguchi, Masataka Yamashita, Shoji Umehara, Shozo Ishikawa, Hajime Miyazaki 1988-07-26
4742692 Method of air-conditioning and system for the same Yoshiyuki Yoneda, Tadashi Gotoh, Masanori Yamakawa, Hisashi Yamamoto 1988-05-10
4743523 Photosensitive member for electrophotography Masataka Yamashita, Takao Takiguchi, Shoji Umehara, Shozo Ishikawa 1988-05-10
4735882 Trisazo photsensitive member for electrophotography Masataka Yamashita, Takao Takiguchi, Shoji Umehara, Shozo Ishikawa 1988-04-05