Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5141575 | Surface treatment for zinciferous surfaces | Noriaki Yoshitake, Takumi Honda, Takao Ogino | 1992-08-25 |
| 5091023 | Composition and process for chromating galvanized steel and like materials | Noriaki Yoshitake | 1992-02-25 |
| 4966634 | Composition of the surface treatment for metal and the treatment method | Iwao Kawasaki, Yoshikazu Shikaze, Mamoru Sugaya | 1990-10-30 |
| 4959277 | Process for treating plated steel sheet | Takao Ogino, Noriaki Yoshitake, Takumi Honda, Akira Nishihara, Hiroshi Okita +2 more | 1990-09-25 |
| 4956027 | Treatment of chromate coating | Noriaki Yoshitake, Takayuki Aoki | 1990-09-11 |
| 4749418 | Chromate coating of zinc surfaces | Kazuyuki Ohyama, Iwao Kawasaki | 1988-06-07 |