Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10137608 | Film-stretching apparatus and method of producing film | — | 2018-11-27 |
| 10090500 | Film-stretching apparatus and method of producing film | — | 2018-10-02 |
| 10072755 | Combination oil ring | Noriaki Ayuzawa, Masahide Hama, Toshiyuki Shibuya | 2018-09-11 |