Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8961734 | Processing method of metal product surface | — | 2015-02-24 |
| 8758680 | Method and device for cleaning air | — | 2014-06-24 |
| 8409598 | Copper ion-producing composition | — | 2013-04-02 |
| 5662963 | Method for preparing colored thermo plastic resin pellets | — | 1997-09-02 |
| 5536576 | Colored, thermoplastic resin pellets | — | 1996-07-16 |