MA

Masaaki Ashizawa

Nichia: 8 patents #239 of 1,531Top 20%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
JL Japan Exlan Company Limited: 1 patents #34 of 76Top 45%
RI Railway Technical Research Institute: 1 patents #70 of 233Top 35%
Overall (All Time): #527,702 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
5300355 Vibration damping material Naoto Mifune, Yasutaka Nagai, Kazuo Nishimoto, Takahiro Niwa, Shuji Ito +1 more 1994-04-05
5231554 Floating magnetic head having low noise level Ryo Goto 1993-07-27
5004650 Rubber-coated gasket material Kazuo Nishimoto, Atsushi Oomura, Shuji Ito 1991-04-02
4956226 Rubber-coated gasket Kazuo Nishimoto, Hiroshi Saito 1990-09-11
4642719 Magnetic head assembly Shigetoshi Morita, Hirohide Yamada 1987-02-10
4629199 Vortex gasket with composition for high-temperature and high-pressure application Tsutomu Yamamoto, Kazuo Nishimoto, Yuji Sekiguchi 1986-12-16
4546033 Gasket sheet Yasushi Tsuchimoto, Shiro Takahata, Kiyotaka Shimada, Koji Tanaka, Susumu Aoki +2 more 1985-10-08
4508777 Compressed non-asbestos sheets Tsutomu Yamamoto, Kazuo Nishimoto, Yuji Sekiguchi 1985-04-02
4485138 Heat-resistant sheet gasket Tsutomu Yamamoto, Yutaka Shimoda 1984-11-27
4477094 Gasket and method for high-temperature and high pressure application Tsutomu Yamamoto, Kazuo Nishimoto, Yuji Sekiguchi 1984-10-16