Issued Patents All Time
Showing 1–25 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667415 | Tertiary butyl 4,4-bis(4′-hydroxyphenyl) pentanoate derivatives and positive resist materials containing the same | Fujio Yagihashi, Jun Watanabe, Akinobu Tanaka, Yoshio Kawai, Tadahito Matsuda | 2003-12-23 |
| 6207841 | Bisphenol derivative and its manufacturing method | Fujio Yagihasi | 2001-03-27 |
| 5750636 | Process for the preparation of a high-molecular-weight polycarbodiimide solution | Yasuyoshi Komoto, Yasuyuki Takiguchi, Ken Yahata, Akira Hayashida | 1998-05-12 |
| 5750637 | Process for the preparation of a polycarbodiimide solution | Yasuyuki Takiguchi, Ken Yahata, Yasuyoshi Komoto, Akira Hayashida | 1998-05-12 |
| 5599949 | Bisphenol derivative and its manufacturing method | Fujio Yagihasi | 1997-02-04 |
| 5512417 | Positive resist composition comprising a bis (t-butoxycarbonylmethly(thymolphthalein as a dissolution inhibitor | Hiroshi Ban, Akinobu Tanaka, Fujio Yagihasi, Jun Watanabe | 1996-04-30 |
| 5252691 | P-vinylphenoxydimethylphenylcarbyldimethylsilane homopolymer | Osamu Watanabe, Motoyuki Yamada, Fujio Yagihashi | 1993-10-12 |
| 5219681 | Lithium cell | Motoyuki Yamada, Osamu Watanabe, Toru Nakanishi | 1993-06-15 |
| 5157096 | Method and apparatus for preparing organic silazane polymer and method for preparing inorganic fibers | Yoshio Hasegawa, Akira Hayashida, Yoshihumi Takeda | 1992-10-20 |
| 5145813 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshifumi Takeda, Tsutomu Takeno, Akira Hayashida | 1992-09-08 |
| 5041515 | Methods for preparing polytitanocarbosilazane polymers and ceramics therefrom | Yoshihumi Takeda, Akira Hayashida | 1991-08-20 |
| 5011639 | Method for the preparation of a sintered body of silicon carbide | Nobuaki Urasato, Akira Hayashida, Hiromi Ohsaki, Jiyunitirow Maruta | 1991-04-30 |
| 5008348 | Infusibilization of organic silazane polymers | Yoshihumi Takeda, Akira Hayashida | 1991-04-16 |
| 4981666 | Method for the preparation of silicon carbide whiskers | Motoyuki Yamada, Akira Hayashida, Nobuaki Urasato, Hiromi Ohsaki | 1991-01-01 |
| 4957607 | Method for the preparation of a cycloalkyl silane compound | Mikio Endo, Toshinobu Ishihara, Tohru Kubota, Toshio Shinohara | 1990-09-18 |
| 4954596 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshifumi Takeda, Tsutomu Takeno | 1990-09-04 |
| 4948763 | Preparation of hollow ceramic fibers | Akira Hayashida, Yoshihumi Takeda | 1990-08-14 |
| 4883569 | Method for the preparation of a cycloalkyl silane compound | Mikio Endo, Toshinobu Ishihara, Tohru Kubota, Toshio Shinohara | 1989-11-28 |
| 4870035 | Process for manufacturing organic silazane polymers and process for manufacturing ceramics from the polymers | Mitsuo Umemura, Masato Kanari, Yoshihumi Takeda, Akira Hayashida | 1989-09-26 |
| 4869854 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshihumi Takeda, Akira Hayashida | 1989-09-26 |
| 4869747 | Method for growth acceleration of plants | Hiroshi Yoshioka, Akira Yamamoto, Toshinobu Ishihara | 1989-09-26 |
| 4847345 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshihumi Takeda, Akira Hayashida, Tsutomu Takeno | 1989-07-11 |
| 4843517 | Film capacitor | Kazumasa Maruyama, Tohru Chiba | 1989-06-27 |
| 4771118 | Process for manufacturing organic silazane polymers and process for manufacturing ceramics from the polymers | Mitsuo Umemura, Masato Kanari, Yoshihumi Takeda, Akira Hayashida | 1988-09-13 |
| 4762810 | Method for the preparation of a sintered body of silicon carbide | Morinobu Endo, Tatsuhiko Hongu, Akira Hayashida, Nobuaki Urasato, Hiromi Ohsaki | 1988-08-09 |