Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4627950 | Method of producing abrasive fibers | Masao Matsui, Hiroshi Naito | 1986-12-09 |
| 4461791 | Fur-like article having pile with difference in color or fineness | Masao Matsui, Kazuo Okamoto | 1984-07-24 |
| 4459128 | Pile articles and a method for producing the pile articles | Masao Matsui, Kazuo Okamoto | 1984-07-10 |
| 4434631 | Apparatus for treating pile articles | Masao Matsui, Kazuo Okamoto | 1984-03-06 |
| 4309479 | Conductive composite filaments | Tsutomu Naruse, Hiroshi Naito, Masao Matsui, Kazuo Okamoto | 1982-01-05 |
| 4216264 | Conductive composite filaments | Tsutomu Naruse, Hiroshi Naito, Masao Matsui, Kazuo Okamoto | 1980-08-05 |