Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7026064 | Polyester film and method for producing the same | Tetsuya Tsunekawa, Shozi Nakajima, Yukari Nakamori | 2006-04-11 |
| 6835461 | Biaxially oriented polyester film, process for producing the same, and magnetic recording medium | Hikaru Yamagata, Hirofumi Hosokawa, Tetsuya Tsunekawa | 2004-12-28 |
| 6090898 | Polyester film and a production process thereof | Tetsuya Tsunekawa, Kenji Tsunashima | 2000-07-18 |
| 5972439 | Polyester film and process for the preparation thereof | Kenji Tsunashima, Tetsuya Tsunekawa | 1999-10-26 |