Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4940851 | Membrane for use in X-ray mask and method for preparing the same | Akira Oyobe, Toshihiko Maeda, Hiroyuki Nakae, Tsuyoshi Masumoto | 1990-07-10 |
| 4920014 | Zirconia film and process for preparing it | Hisanori Yamane | 1990-04-24 |
| 4900526 | Polycrystalline rhombohedral boron nitride and method of producing the same | Toshitsugu Matsuda, Hiroyuki Nakae | 1990-02-13 |
| 4772304 | Transparent BN-type ceramic material and method of producing the same | Hiroyuki Nakae, Yukio Matsunami, Toshitsugu Matsuda | 1988-09-20 |
| 4751099 | Method of producing a functionally gradient material | Masayuki Niino, Akio Suzuki, Ryuzo Watanabe, Tohru Hirano, Nobuhito Kuroishi | 1988-06-14 |
| 4746635 | High strength and high hardness alumina-zirconia-silicon carbide sintered ceramic composite and its manufacturing process | Sigeo Inoue, Tetsuo Uchiyama, Koichi Niihara | 1988-05-24 |
| 4585704 | Electrically conductive Si.sub.3 N.sub.4 --C series amorphous material and a method of processing the same | Takashi Goto | 1986-04-29 |
| 4565747 | Boron nitride containing titanium nitride, method of producing the same and composite ceramics produced therefrom | Hiroyuki Nakae, Toshitsugu Matsuda, Naoki Uno, Yukio Matsunami, Tsuyoshi Masumoto | 1986-01-21 |
| 4469801 | Titanium-containing silicon nitride film bodies and a method of producing the same | Shinsuke Hayashi, Akira Ohkubo | 1984-09-04 |
| 4393097 | Electrically conductive Si.sub.3 N.sub.4 -C series amorphous material and a method of producing the same | Takashi Goto | 1983-07-12 |
| 4340568 | Super hard highly pure silicon nitrides and a process and apparatus for producing the same | Koichi Niihara | 1982-07-20 |
| 4312924 | Super hard highly pure silicon nitrides | Koichi Niihara | 1982-01-26 |
| 4312921 | Super hard-highly pure silicon nitrides | Koichi Niihara | 1982-01-26 |
| 4312923 | Super hard-highly pure silicon nitrides, and a process and apparatus for producing the same | Koichi Nihara | 1982-01-26 |
| 4279689 | Process for producing super hard-highly pure silicon nitrides | Koichi Niihara | 1981-07-21 |
| 4224296 | Super hard-highly pure silicon nitrides, and a process and apparatus for producing the same | Koichi Niihara | 1980-09-23 |