Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5098700 | Far infrared ray emitting, odor-absorbing material | Hirotaka Nakai | 1992-03-24 |
| 4886972 | Far infrared ray emitting body of a core material coated with an ultrafine powder | Hirotaka Nakai | 1989-12-12 |
| 4244933 | Calcium carbonate particles and processes for preparing same | Hiroji Shibazaki, Hisashi Hasegawa, Satoshi Kondo | 1981-01-13 |
| 4240870 | Filled paper | Hiroji Shibazaki, Hisashi Hasegawa | 1980-12-23 |
| 4219590 | Method for improving calcium carbonate | Hiroji Shibazaki, Yoshinaga Okamoto | 1980-08-26 |