Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569800 | Catalyst component for polymerization of olefins, polymerization catalyst and process of polymerization of olefins by using the same | Toshifumi Takemori, Shigeharu Yamamoto | 2003-05-27 |
| 6350831 | Process for the polymerization of olefins using a catalyst containing a novel catalyst component | Toshifumi Takemori, Shigeharu Yamamoto | 2002-02-26 |
| 6323149 | Catalyst component and catalyst containing the component for polymerization of olefins | Toshifumi Takemori, Shigeharu Yamamoto | 2001-11-27 |
| 6194344 | Process for preparing carbonaceous material carrying ultrafinely dispersed metal | Ryoichi Nakajima, Kiyotaka Suzuki, Hitoshi Shigematsu, Katsutoshi Nishitani | 2001-02-27 |
| 5736030 | Process for manufacturing fine particles of pitch with a high softening point | Kiyotaka Suzuki, Ryoichi Nakajima, Tomohiko Sato | 1998-04-07 |
| 5240613 | Process for regenerating clogged filters | Sakae Naito, Ryoichi Nakajima, Kensuke Iuchi, Shintaro Hasebe | 1993-08-31 |
| 5182011 | Process for preparing pitches | Makoto Tamura, Kiyotaka Suzuki, Shuji Okada, Ryoichi Nakajima, Sakae Naito | 1993-01-26 |
| 5091072 | Process for preparing pitches | Makoto Tamura, Kiyotaka Suzuki, Sjuji Okada, Ryoichi Nakajima, Sakae Naito | 1992-02-25 |
| 4925547 | Process for producing pitch for the manufacture of high-performance carbon fibers together with pitch for the manufacture of general-purpose carbon fibers | Sakae Naito, Hiroshi Morijiri, Kiyotaka Suzuki | 1990-05-15 |
| 4874502 | Method of purifying coal tars for use in the production of carbon products | Sakae Naito | 1989-10-17 |
| 4820401 | Process for the preparation of mesophase pitches | Sakae Naito, Ryoichi Nakajima | 1989-04-11 |
| 4818449 | Process to prevent crack formation in the production of carbon fibers | Yasuhiro Yamada, Takeshi Imamura, Hidemasa Honda, Ryoichi Nakajima | 1989-04-04 |
| 4789456 | Process for preparing mesophase pitches | Sakae Naito, Ryoichi Nakajima | 1988-12-06 |
| 4705618 | Process for the preparation of an intermediate pitch for manufacturing carbon products | Ryoichi Nakajima | 1987-11-10 |