Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5622660 | Process for producing carbon fiber fabrics | Yoshio Sohda, Yasuzi Ido | 1997-04-22 |
| 5399378 | Process of manufacturing carbon fibers with high chemical stability | Yoshio Sohda, Takefumi Kohno | 1995-03-21 |
| 5192471 | Process for preparing carbon/carbon composite | Yoshio Sohda, Osamu Kato, Takefumi Kouno, Tsutomu Kihara | 1993-03-09 |
| 5186873 | Process for preparing carbon/carbon composite | Yoshio Souda, Osamu Kato, Takefumi Kouno, Tsutomu Kihara | 1993-02-16 |
| 5181979 | Process for preparing carbon/carbon composite | Yoshio Sohda, Osamu Kato, Takefumi Kouno, Tsutomu Kihara | 1993-01-26 |
| 5093156 | Process for preparing carbon material | Yoshio Sohda, Yasuji Ido, Yukinori Kude, Takefumi Kohno, Toshio Hirai +2 more | 1992-03-03 |
| 5061413 | Process for producing pitch-based carbon fibers | Hiroaki Takashima, Osamu Kato | 1991-10-29 |
| 5045356 | Process for producing carbon/carbon composite having oxidation resistance | Yoshio Sohda, Yasuji Ido, Toshio Hirai, Makoto Sasaki, Masayuki Niino | 1991-09-03 |
| 4850836 | Melt spinning apparatus | Naoyuki Maeda, Akira Nii, Shunichi Yamamoto | 1989-07-25 |
| 4849200 | Process for fabricating carbon/carbon composite | Yoshio Sohda, Yasuji Ido, Shunichi Yamamoto | 1989-07-18 |
| 4788050 | Process for producing pitch-based carbon fibers | Takao Hirose, Yoshio Sohda, Kazuyoshi Okamoto | 1988-11-29 |
| 4656022 | Process for producing pitch carbon fibers | Takao Hirose, Yoshio Sohda, Takayoshi Sakamoto, Kenji Katoh | 1987-04-07 |
| 4620919 | Pitch for the production of carbon fibers | Hiroaki Takashima, Osamu Kato, Hazime Nakazima | 1986-11-04 |
| 4618463 | Process for producing pitch carbon fibers | Takao Hirose, Yoshio Shohda, Takayoshi Sakamoto, Kenji Katoh | 1986-10-21 |
| 4579645 | Starting pitch for carbon fibers | Hiroaki Takashima, Osamu Kato, Michiharu Harakawa | 1986-04-01 |
| 4575411 | Process for preparing precursor pitch for carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1986-03-11 |
| 4574077 | Process for producing pitch based graphite fibers | Takao Hirose, Yoshio Sohda, Takayoshi Sakamoto, Yoshio Kishimoto | 1986-03-04 |
| 4534950 | Process for producing carbon fibers | Takao Hirose, Yoshio Sohda | 1985-08-13 |
| 4533535 | Starting pitches for carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Katoh | 1985-08-06 |
| 4521294 | Starting pitches for carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1985-06-04 |
| 4490239 | Pitch for carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1984-12-25 |
| 4474617 | Pitch for carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1984-10-02 |
| 4470960 | Process for the production of pitch-derived carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1984-09-11 |
| 4469667 | Process for production of pitch-derived carbon fibers | Shunichi Yamamoto, Takao Hirose, Hiroaki Takashima, Osamu Kato | 1984-09-04 |
| 4460557 | Starting pitches for carbon fibers | Hiroaki Takashima, Osamu Kato, Shunichi Yamamoto, Takao Hirose | 1984-07-17 |