Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11665805 | Lighting device | Tadashi Fujii, Hideto Sanui, Jun Ito, Hajime Suzuki, Youmei Kaminaga +1 more | 2023-05-30 |
| 10932338 | Power supply adjustment system and lighting apparatus | Yukihito Yabuki, Kazuo Maruyama | 2021-02-23 |
| 10668811 | Power supply system and railroad car | Akitaka Samejima, Jun Matsunaga, Kazuo Maruyama | 2020-06-02 |
| 8241515 | Method of manufacturing semiconductor device and semiconductor manufacturing apparatus | Kazuhiko Ohmuro, Ryoji Shigemasa, Tomoyuki Ohshima | 2012-08-14 |
| 7981787 | Semiconductor device manufacturing method | Ryoji Shigemasa, Tomoyuki Ohshima | 2011-07-19 |
| 6093291 | Electroplating apparatus | Takehiko Okajima | 2000-07-25 |
| 5665464 | Carbon fiber-reinforced carbon composite material and process for the preparation thereof | Jun Takayasu, Kazuyuki Murakami, Eiki Tsushima | 1997-09-09 |
| 4810437 | Process for manufacturing carbon fiber and graphite fiber | Kikuji Komine, Wataru Kobayashi | 1989-03-07 |
| RE32792 | Process for producing mesophase pitch | Tsutomu Naito, Seiko Igarashi | 1988-11-29 |
| 4670202 | Method and apparatus for melt spinning | Yoshio Uenoyama, Kiyoshi Takazawa | 1987-06-02 |
| 4655902 | Optically anisotropic carbonaceous pitch | Tsutomu Naito, Masuo Shinya, Tomio Nomura | 1987-04-07 |
| 4601813 | Process for producing optically anisotropic carbonaceous pitch | Tsutomu Naito, Masuo Shinya, Tomio Nomura | 1986-07-22 |
| 4589974 | Optically anisotropic carbonaceous pitch and process for producing the same | — | 1986-05-20 |
| 4534850 | Optically antisotropic carbonaceous pitch | Tsutomu Naito, Tomoo Nakamura | 1985-08-13 |
| 4533461 | Process for producing mesophase pitch | Tsutomu Naito, Seiko Igarashi | 1985-08-06 |
| 4511456 | Process for continuous production of optically anisotropic pitch | — | 1985-04-16 |
| 4454019 | Process for producing optically anisotropic carbonaceous pitch | Tsutomu Naito, Tomoo Nakamura, Hisao Tanaka | 1984-06-12 |
| 4454020 | Process for producing a homogeneous low softening point, optically anisotropic pitch | Tsutomu Naito, Seikoh Igarashi | 1984-06-12 |