Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6177169 | Optical information recording medium | Hiroki Yamamoto, Takashi Naito, Yasutaka Suzuki, Ken Takahashi, Motoyasu Terao +1 more | 2001-01-23 |
| 6150027 | Glass composition, structure, and apparatus using the same | Hiroki Yamamoto, Takashi Naito, Ken Takahashi, Noriyuki Kumasaka, Kenkichi Inada | 2000-11-21 |
| 6136401 | Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information | Hiroki Yamamoto, Takashi Naito, Ken Takahashi, Masahiro Watanabe, Noriyuki Takeo | 2000-10-24 |
| 6040029 | Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information | Hiroki Yamamoto, Takashi Naito, Ken Takahashi, Masahiro Watanabe, Noriyuki Takeo | 2000-03-21 |
| 5985401 | Optical information recording medium | Hiroki Yamamoto, Takashi Naito, Yasutaka Suzuki, Ken Takahashi, Motoyasu Terao +1 more | 1999-11-16 |
| 5519555 | Magnetic head including PbO-V.sub.2 O.sub.5 -P.sub.2 O.sub.5 system glass bonding | Takashi Naitoh, Seiichi Yamada, Kunihiro Maeda, Kenkichi Inada | 1996-05-21 |
| 5239434 | Magnetic head, bonding glass used therefor and magnetic recording and reproducing apparatus | Takashi Naito, Kunihiro Maeda, Yasutaka Suzuki, Kouji Arikawa, Tsukasa Ohata | 1993-08-24 |
| 4816949 | Magnetic head containing amorphous alloy and crystallizable glass | Seiichi Yamada, Takashi Naitoh, Akira Ikegami, Ryoo Gotoo, Toshikazu Nishiyama | 1989-03-28 |
| 4794483 | Magnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxide | Takashi Naitoh, Seiichi Yamada, Satoru Ogihara, Juichi Morikawa | 1988-12-27 |
| 4780695 | Refractory leakage coaxial cable | Toru Watari, Hideaki Saito, Hideki Yagyu | 1988-10-25 |
| 4741849 | Ceramic body glass composition for bonding and filling ceramic parts thereof | Takashi Naito, Satoru Ogihara | 1988-05-03 |
| 4470063 | Copper matrix electrode having carbon fibers therein | Hideo Arakawa, Keiichi Kuniya, Masabumi Ohashi | 1984-09-04 |
| 4229631 | Vacuum-type circuit breaker | Hideo Arakawa, Keiichi Kuniya, Hiroyuki Sugawara | 1980-10-21 |