Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5286929 | Sound absorbing materials | Shigenori Kazama, Hiroshi Sugawara, Yugoro Masuda | 1994-02-15 |
| 4959268 | Polymer containing amorphous aluminosilicate particles and process for producing the same | Zenji Hagiwara, Satoshi Ando, Kunio Ichihashi | 1990-09-25 |