Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7601253 | Process oil and process for producing the same | Yoshiyuki Morishima, Kenji Fujino | 2009-10-13 |
| 6878263 | Rubber process oil and production process thereof | Kazumitsu Fujihara, Yoshiyuki Morishima | 2005-04-12 |
| 6875730 | Lubricant for refrigerating machine employing ammonia refrigerant | Hitoshi Takahashi, Goro Yamamoto, Kimiyoshi Namiwa, Ayako Saneyoshi | 2005-04-05 |
| 6568195 | Ammonia refrigerating apparatus | Hitoshi Takahashi, Masato Namiki, Goro Yamamoto | 2003-05-27 |
| 6548457 | Lubricant for refrigerating machine employing ammonia refrigerant | Hitoshi Takahashi | 2003-04-15 |
| 6335311 | Lubricant for refrigerators using ammonia refrigerant | Masato Namiki, Goro Yamamoto, Hitoshi Takahashi | 2002-01-01 |
| 6248929 | Rubber process oil and production process thereof | Kazumitsu Fujihara, Yoshiyuki Morishima | 2001-06-19 |
| 6080705 | Refrigerator oil, working fluid for refrigerator, and method for lubricating refrigeration system | Hitoshi Takahashi | 2000-06-27 |
| 5744053 | Lubricating oil additive, lubrication oil and working fluid for refrigerators | — | 1998-04-28 |
| 5711896 | Polyoxyalkylene glycol lubricating oils, working fluid compositions and methods of lubricating | — | 1998-01-27 |
| 5688433 | Ammonia refrigerating machine, working fluid composition and method | Keisuke Kasahara, Kuniaki Kawamura, Hisashi Yano | 1997-11-18 |
| 5651257 | Working fluid composition and method for lubricating ammonia refrigerating machine | Keisuke Kasahara, Kuniaki Kawamura, Hisashi Yano | 1997-07-29 |
| 5560854 | Working fluid composition for HFC refrigerant compressor containing benzotriazole derivatives, and a process for improving lubrication in a compressor | Hiroki Tawaki, Sumio Yokoo | 1996-10-01 |
| 5543068 | Lubricating oils for flon compressors, compositions adapted for flon compressors and composed of mixtures of said lubricating oils and flon, and process for lubricating flon compressor by using said lubricating oils | Hiroki Tawaki, Sumio Yokoo, Yoshie Arakawa | 1996-08-06 |
| 4770763 | Process for producing lubricant base oil | Sampo Kusayanagi | 1988-09-13 |
| 4707280 | Lubricating oil for use in Flon atmosphere | Sampo Kusayanagi | 1987-11-17 |