MT

Masakatsu Tanaka

HI Hitachi: 9 patents #4,653 of 28,497Top 20%
NC Nippon Air Brake Co.: 2 patents #23 of 107Top 25%
NN Nippon Television Network: 1 patents #15 of 33Top 50%
Overall (All Time): #357,535 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5718093 Floor panel joint structure and method of making a wooden building with the same 1998-02-17
5685114 Structural member, floor structure, and roof structure for wooden building and a method of building with the same 1997-11-11
5458216 Elevator apparatus Seinosuke Yahiro, Jun Sugahara, Satoru Sasaki 1995-10-17
5457498 Television signal digitizing method dividing progressive-scanned signal into two complementary interlace signals Akihiro Hori, Tadao Kurosaki 1995-10-10
5323878 Braking apparatus for elevator cage Ichiro Nakamura, Tsuyoshi Ogasawara, Masayuki Shigeta 1994-06-28
5265701 Elevator with means for controlling upward and downward movement of cage Tsuyoshi Ogasawara, Ichiro Nakamura, Haruo Watanabe, Masayuki Shigeta 1993-11-30
5244060 Elevator apparatus Masayuki Shigeta, Jun Sugahara, Masanobu Itoh, Ichiro Nakamura 1993-09-14
5154261 Electromagnetic disc brake for elevator lifting apparatus Masanobu Itoh, Toshihiko Nara, Tasuhiko Takahashi 1992-10-13
5067593 Braking device for elevator winding machine and elevator using the braking device Masanobu Itoh, Noboru Arabori, Toshihiko Nara, Tastuhiko Takahashi, Katutaro Masuda +1 more 1991-11-26
5025896 Elevator control apparatus Noboru Arabori, Hideaki Takahashi, Yoshio Sakai, Masao Nakazato, Tatsuhiko Takahashi +3 more 1991-06-25
4982815 Elevator apparatus Noboru Arabori, Hideaki Takahashi, Yoshio Sakai, Tsutomu Sano, Masao Nakazato +3 more 1991-01-08
4846309 Elevator hoisting apparatus Toshihiko Nara, Tastuhiko Takahashi, Yusho Maue, Naoyuki Tanaka, Masaaki Isono +1 more 1989-07-11
4773222 Pneumatic brake booster with booster-cylinder-end retained relay valve Hirohisa Totoki 1988-09-27
4544385 Air dryer device for compressed air system of vehicle 1985-10-01