Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9007073 | Measuring method for degree of degradation of lubricating oil, and measuring device therefor, as well as lubricating oil monitoring system in machine and device | — | 2015-04-14 |
| 8854058 | Measurement method of degradation/alteration degree of lubricant oil and measurement device thereof | — | 2014-10-07 |
| 8664966 | Device for evaluating degree of degradation of lubricating oil | — | 2014-03-04 |
| 8575080 | Lubricating oil composition for diesel engine | — | 2013-11-05 |
| 8129319 | Lubricating composition | Motoharu Ishikawa | 2012-03-06 |
| 7989406 | Additive for diesel particulate filter | — | 2011-08-02 |
| 6962614 | Additive for diesel particulate filter | — | 2005-11-08 |
| 6376434 | Lube oil compositions for diesel engines | — | 2002-04-23 |
| 6159911 | Diesel engine oil composition | — | 2000-12-12 |
| 6140280 | Succinimide compound and method for producing it, lubricating oil additive comprising the compound and lubricating oil composition comprising the compound for diesel engine | Takeshige Nakano | 2000-10-31 |
| 6013609 | Refrigerator oil and process for lubrication using the refrigerator oil | — | 2000-01-11 |
| 5980829 | Neutralization testing apparatus | — | 1999-11-09 |
| 5554311 | Lubricant for refrigerating machine employing refrigerant comprising hydrofluoroethane | Akira Nakamura | 1996-09-10 |
| 5431835 | Lubricant refrigerant comprising composition containing fluorohydrocarbon | Akira Nakamura | 1995-07-11 |
| 4832860 | Lubricating oil for metal working | Hiroo Mitazaki, Seiichi Shido, Yasunori Tomari, Kenji Onodera | 1989-05-23 |
| 4828731 | Lubricating oil composition for working metal | — | 1989-05-09 |
| 4563097 | Method of evaluating cooling performance of heat treatment agent and apparatus therefor | — | 1986-01-07 |