Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6838544 | Polyol polymers, meso-erythritol polymers and their aliphatic acid esters and aliphatic ethers | Ge Li, Takahito Otani, Hirokuni Tajima, Hitoshi Kawakami | 2005-01-04 |
| 4465999 | Matrix driving method for electro-optical display device | Akira Tsuzuki, Shigeru Morokawa | 1984-08-14 |
| 4443062 | Multi-layer display device with nonactive display element groups | Seigo Togashi, Akira Tsuzuki | 1984-04-17 |
| 4264967 | Unit time producing system | Akira Tsuzuki | 1981-04-28 |
| 4244043 | Frequency division system | Akira Tsuzuki, Heihachiro Ebiha, Fukuo Sekiya | 1981-01-06 |
| 4241435 | Electronic timepiece oscillator circuit | Akira Tsuzuki | 1980-12-23 |