Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10054370 | Heat exchanger | — | 2018-08-21 |
| 9470441 | Dehumidifier having flat plate air-to-air heat exchanger | — | 2016-10-18 |
| 9297588 | Heat exchanger | — | 2016-03-29 |
| 7726915 | Machine for spectacle lens | — | 2010-06-01 |
| 5967884 | Buffing machine for lens | Norio Okimoto | 1999-10-19 |
| 5465495 | Lens shape measuring instrument | — | 1995-11-14 |