Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961976 | Method of increasing the dynamical strength of glass container | Yutaka Hashimoto, Masanobu Yumoto, Toshihiko Umaba, Yutaka Kamada, Sigeo Kawaguchi | 1990-10-09 |
| 4891241 | Method of increasing the dynamical strength of glass container | Yutaka Hashimoto, Masanobu Yumoto, Toshihiko Umaba, Yutaka Kamada, Sigeo Kawaguchi | 1990-01-02 |
| 4595544 | Method of manufacturing a container covered with protective sheet | Hisao Maruyama, Masahiko Kitajima | 1986-06-17 |