Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7052626 | Fluid compositions containing refrigeration oils and chlorine-free fluorocarbon refrigerants | Hiroshi Hasegawa, Noboru Ishida, Tatsuyuki Ishikawa | 2006-05-30 |
| 6998065 | Fluid compositions containing refrigerator oils and chlorine-free fluorocarbon refrigerants | Hiroshi Hasegawa, Noboru Ishida, Tatsuyuki Ishikawa | 2006-02-14 |
| 6582621 | Refrigerator oils for use with chlorine-free fluorocarbon refrigerants | Tatsuyuki Ishikawa, Hiroshi Hasegawa, Noboru Ishida | 2003-06-24 |
| 6251300 | Refrigerator oil compositions and fluid compositions for refrigerator | Katsuya Takigawa, Satoshi Suda | 2001-06-26 |
| 6207071 | Fluid composition comprising HFC refrigerant and alkylbenzene-based refrigerator oil | Katsuya Takigawa, Satoshi Suda | 2001-03-27 |
| 6153118 | Fluid compositions containing refrigerator oils and chlorine-free fluorocarbon refrigerants | Hiroshi Hasegawa, Noboru Ishida, Tatsuyuki Ishikawa | 2000-11-28 |
| 5817251 | Fluid composition for use in a refrigerating machine in which the refrigerating machine oil is at least one hydrocarbon compound of a formula consisting of a biphenyl group | Katsuya Takigawa, Satoshi Suda | 1998-10-06 |
| 5746933 | Lubricating oil and composition for refrigerating machine, and refrigerating machine | Noboru Ishida, Katsuya Takigawa, Satoshi Suda | 1998-05-05 |
| 5711895 | Fluid composition for use in a refrigerating machine in which the refrigerating machine oil is at least one hydrocarbon compound of a formula consisting of two phenyl groups joined through an alkylene or alkenylene group | Katsuya Takigawa, Satoshi Suda | 1998-01-27 |
| 5512198 | Lubricating compositions comprising fluoroalkane refrigerant, an ester and/or polyglycol oil, and an inorganic boron compound | Motoshi Sunami, Hiroshi Hasegawa | 1996-04-30 |
| 5464550 | Refrigerator oil composition containing phosphate ester additives for fluoroalkane refrigerant | Hiroshi Hasegawa, Yuji Shimomura | 1995-11-07 |
| 5447647 | Synthetic lubricating oil | Noboru Ishida, Motoshi Sunami, Tatsuyuki Ishikawa, Hiroshi Hasegawa | 1995-09-05 |
| 5391311 | Fluid compositions for refrigerators | Noboru Ishida, Hiroshi Hasegawa, Tatsuyuki Ishikawa | 1995-02-21 |
| 5279752 | Composition for lubricating oil | Hiroshi Hasegawa, Fujio Komatu, Shigetoshi Ogura, Hideo Yokota | 1994-01-18 |
| 5262076 | Synthetic lubricating oils | Noboru Ishida, Hiroshi Hasegawa, Tatsuyuki Ishikawa | 1993-11-16 |
| 4948525 | Lubricating oil compositions for refrigerators | Hiroshi Hasegawa | 1990-08-14 |
| 4504403 | Refrigeration oil composition | Masaaki Tsunemi | 1985-03-12 |
| 4267064 | Refrigeration lubricating oil compositions | Masaaki Tsunemi, Kaichi Yamada, Yoshiyuki Morikawa | 1981-05-12 |
| 4248726 | High-viscosity refrigerator oil compositions | Kazuo Uchinuma | 1981-02-03 |