Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5587239 | Ball-like structures and contacting materials for wastewater-treatment | Yosio Sunaga, Tosio Nagasima | 1996-12-24 |
| 5427008 | Core material of string for instruments and string for instruments using the same | Kazuaki Ohashi, Yosio Sunaga | 1995-06-27 |
| 4833027 | String for a musical instrument | Yoshio Sunaga | 1989-05-23 |
| 4690849 | Contact material for treating sewage of braided pile material | Ken Fukuda | 1987-09-01 |
| 4445964 | Apparatus for manufacturing a string construction | Masaaki Nakamura | 1984-05-01 |
| 4328055 | Gut | Masaaki Nakamura | 1982-05-04 |
| 4306410 | String construction for athletic rackets | Masaaki Nakamura | 1981-12-22 |
| 4300343 | Gut | Masaaki Nakamura | 1981-11-17 |