Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7780933 | Method of removing sulfur compounds from natural gas | Yoshitsugi Kikkawa, Hiroshi Inoue, Etsuro Sato | 2010-08-24 |
| 5365740 | Refrigeration system for a natural gas liquefaction process | Yoshitsugi Kikkawa, Osamu Yamamoto, Kenrou Ohmori, Motohiro Ohmori | 1994-11-22 |