Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5935919 | Alkaline degreasing solution and degreasing method employing the same | Minoru Ishida, Shoji Shiraishi, Tamotsu Sobata | 1999-08-10 |
| 5925613 | Alkaline degreasing solution and degreasing method employing the same | Minoru Ishida, Shoji Shiraishi, Tamotsu Sobata | 1999-07-20 |
| 5908512 | Highly durable surface-conditioning agent | Seiichiro Shirahata, Tamotsu Sobata | 1999-06-01 |
| 5863357 | Method for zinc phosphating molded metal articles | Masashi Takahashi, Satoshi Miyamoto, Tamotsu Sobata | 1999-01-26 |
| 5780122 | Pretreatment method for coating on molded metal article | Seiichiro Shirahata, Satoshi Miyamoto, Tamotsu Sobata | 1998-07-14 |