Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9025924 | Optical fiber | Minoru Saito, Minoru KASAHARA, Hiroki Tanaka, Yasuo Nakajima | 2015-05-05 |
| 8731365 | Optical fibers | Yasuo Nakajima, Hiroki Tanaka | 2014-05-20 |
| 8639077 | Colored coated optical fiber | Hiroki Tanaka, Yasuo Nakajima, Yoshihiro Arashitani | 2014-01-28 |
| 8571372 | Optical fiber | Yasuo Nakajima, Hiroki Tanaka, Yoshihiro Arashitani | 2013-10-29 |
| 8295666 | Coated optical fibers | Yasuo Nakajima, Hiroki Tanaka | 2012-10-23 |
| 8111964 | Optical fiber | Yasuo Nakajima, Hiroki Tanaka, Yoshihiro Arashitani, Mitsunori Okada | 2012-02-07 |
| 7978948 | Optical fiber and optical fiber ribbon | Yasuo Nakajima, Hiroki Tanaka, Yoshihiro Arashitani, Mitsunori Okada | 2011-07-12 |
| 7876991 | Optical fiber | Yasuo Nakajima, Hiroki Tanaka | 2011-01-25 |
| 7551825 | Colored optical fiber and evaluation method thereof | Yasuo Nakajima, Hiroki Tanaka, Tetsuo Sato | 2009-06-23 |
| D578975 | Digital video disc recorder | Takako Uchida | 2008-10-21 |
| 7257801 | Cell library database and timing verification and withstand voltage verification systems for integrated circuit using the same | Shiro Sakiyama | 2007-08-14 |
| 6963238 | Level shift circuit | — | 2005-11-08 |
| 5166092 | Method of growing compound semiconductor epitaxial layer by atomic layer epitaxy | Nobuyuki Ohtsuka, Masashi Ozeki | 1992-11-24 |
| 4861417 | Method of growing group III-V compound semiconductor epitaxial layer | Masashi Ozeki, Nobuyuki Ohtsuka | 1989-08-29 |