Issued Patents All Time
Showing 76–82 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723518 | Aluminum alloy cylinder head with valve seat formed integrally by copper alloy cladding layer and underlying alloy layer | Minoru Kawasaki, Soya Takagi, Katsuhiko Ueda | 1988-02-09 |
| 4604707 | Device and method for comparing optical signals | Tsukasa Yamashita, Nobuhisa Inoue, Masaharu Matano | 1986-08-05 |
| 4595253 | Parallel-to-serial conversion of optical data using acousto-optical diffraction | Tsukasa Yamashita, Masaharu Matano, Norihiro OTA | 1986-06-17 |
| 4568911 | Method and device for optical D-A conversion | Ysukasa Yamashita, Masaharu Matano, Nobuhisa Inoue | 1986-02-04 |
| 4532632 | Tunable semiconductor laser | Tsukasa Yamashita, Masaharu Matano, Norihiro OTA | 1985-07-30 |
| 4517030 | Process for activating steel surface prior to phosphating treatment aqueous activating solution therefor | Tsukasa Yamamoto, Asao Mochizuki, Hiroshi Okita, Toshi Miyawaki, Yoshiji Shirogane | 1985-05-14 |
| 4491384 | Optical switch device | Tsukasa Yamashita, Masaharu Matano, Norihiro OTA | 1985-01-01 |