Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5200371 | Method for preparing organic silazane polymers and method for preparing ceramics from the polymers | Yoshihumi Takeda | 1993-04-06 |
| 5183875 | Method for manufacturing a hafnium-containing silazane polymer and a method for manufacturing a ceramic from said polymer | Yoshihumi Takeda | 1993-02-02 |
| 5162477 | Preparation of polyorganosilanes | Shigeru Mori, Eiichi Tabei, Yoshinori Hida, Motoo Fukushima | 1992-11-10 |
| 5157096 | Method and apparatus for preparing organic silazane polymer and method for preparing inorganic fibers | Yoshio Hasegawa, Minoru Takamizawa, Yoshihumi Takeda | 1992-10-20 |
| 5145813 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshifumi Takeda, Minoru Takamizawa, Tsutomu Takeno | 1992-09-08 |
| 5128430 | Preparation of polysilanes | Eiichi Tabei, Motoo Fukushima, Yoshinori Hida, Shigeru Mori | 1992-07-07 |
| 5097055 | Production of methylphenyltrisiloxane | Katsuhiro Uehara, Toshinobu Ishihara, Jiyunitirow Maruta | 1992-03-17 |
| 5075474 | Method for preparing hexamethyl cyclotrisilazane | Hiromi Ohsaki, Yoshihumi Takeda, Toshinobu Ishihara | 1991-12-24 |
| 5041515 | Methods for preparing polytitanocarbosilazane polymers and ceramics therefrom | Yoshihumi Takeda, Minoru Takamizawa | 1991-08-20 |
| 5011639 | Method for the preparation of a sintered body of silicon carbide | Nobuaki Urasato, Minoru Takamizawa, Hiromi Ohsaki, Jiyunitirow Maruta | 1991-04-30 |
| 5008348 | Infusibilization of organic silazane polymers | Yoshihumi Takeda, Minoru Takamizawa | 1991-04-16 |
| 4981666 | Method for the preparation of silicon carbide whiskers | Motoyuki Yamada, Minoru Takamizawa, Nobuaki Urasato, Hiromi Ohsaki | 1991-01-01 |
| 4975392 | Method for manufacturing silicon carbide whisker | Motoyuki Yamada, Kazutoshi Numanami, Takahiro Iizuka | 1990-12-04 |
| 4958040 | Process for the preparation of diorganohalogenosilanes | Hiroshi Yoshioka, Masaaki Yamaya, Hiromi Ohsaki | 1990-09-18 |
| 4948763 | Preparation of hollow ceramic fibers | Minoru Takamizawa, Yoshihumi Takeda | 1990-08-14 |
| 4869854 | Process for manufacturing organic silazane polymers and ceramics therefrom | Yoshihumi Takeda, Minoru Takamizawa | 1989-09-26 |
| 4870035 | Process for manufacturing organic silazane polymers and process for manufacturing ceramics from the polymers | Minoru Takamizawa, Mitsuo Umemura, Masato Kanari, Yoshihumi Takeda | 1989-09-26 |
| 4849196 | Process for producing silicon carbide whiskers | Motoyuki Yamada, Kazutoshi Numanami, Takahiro Iizuka | 1989-07-18 |
| 4847345 | Process for manufacturing organic silazane polymers and ceramics therefrom | Minoru Takamizawa, Yoshihumi Takeda, Tsutomu Takeno | 1989-07-11 |
| 4771118 | Process for manufacturing organic silazane polymers and process for manufacturing ceramics from the polymers | Minoru Takamizawa, Mitsuo Umemura, Masato Kanari, Yoshihumi Takeda | 1988-09-13 |
| 4762810 | Method for the preparation of a sintered body of silicon carbide | Morinobu Endo, Minoru Takamizawa, Tatsuhiko Hongu, Nobuaki Urasato, Hiromi Ohsaki | 1988-08-09 |
| 4657991 | Precursor composition of silicon carbide | Minoru Takamizawa, Taishi Kobayashi, Toshinobu Ishihara, Yoshihumi Takeda | 1987-04-14 |
| 4604367 | Method for the preparation of an inorganic fiber containing silicon, carbon, boron and nitrogen | Minoru Takamizawa, Taishi Kobayashi, Yoshihumi Takeda | 1986-08-05 |
| 4571331 | Ultrafine powder of silicon carbide, a method for the preparation thereof and a sintered body therefrom | Morinobu Endou, Minoru Takamizawa, Tatsuhiko Hongu, Taishi Kobayashi, Nobuaki Urasato +3 more | 1986-02-18 |
| 4550151 | Organoborosilicon polymer and a method for the preparation thereof | Minoru Takamizawa, Taishi Kobayashi, Yoshihumi Takeda | 1985-10-29 |