Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7938867 | Fuel composition containing a medium substantially free of sulphur and process thereof | David L. Spivey, Robert H. Barbour, John K. Pudelski | 2011-05-10 |
| 7901471 | Fuel composition containing a medium substantially free of sulphur and process thereof | David L. Spivey, Robert H. Barbour, John K. Pudelski | 2011-03-08 |
| 7462583 | Method of lubricating an internal combustion engine and improving the efficiency of the emissions control system of the engine | Melody A. Wilk, Jack C. Kelley, William D. Abraham | 2008-12-09 |
| 7402186 | Fuel composition containing a medium substantially free of sulphur and process thereof | David L. Spivey, Robert H. Barbour, John K. Pudelski | 2008-07-22 |
| 6588393 | Low-sulfur consumable lubricating oil composition and a method of operating an internal combustion engine using the same | John K. Pudelski | 2003-07-08 |
| 6412468 | Method of operating an internal combustion engine | John K. Pudelski | 2002-07-02 |
| 6408812 | Method of operating spark-ignition four-stroke internal combustion engine | John K. Pudelski, George S. Szappanos | 2002-06-25 |
| 6242394 | Two-stroke cycle lubricant and method of using same | — | 2001-06-05 |
| 5422022 | Lubricants, lubricant additives, and methods for lubricating sump-lubricated fuel-injected alcohol-powered internal combustion engines | — | 1995-06-06 |
| 5360460 | Composition and method relating to diesel powered vehicles | Edward C. Mozdzen, Barbara A. Saiter | 1994-11-01 |
| 5197997 | Composition for use in diesel powered vehicles | Edward C. Mozdzen, Barbara A. Saiter | 1993-03-30 |
| 4957649 | Lubricating oil compositions and concentrates | David E. Ripple | 1990-09-18 |
| 4941984 | Lubricating oil compositions and methods for lubricating gasoline-fueled and/or alcohol-fueled, spark-ignited engines | Frank V. Zalar | 1990-07-17 |
| 4938881 | Lubricating oil compositions and concentrates | David E. Ripple | 1990-07-03 |
| 4326972 | Concentrates, lubricant compositions and methods for improving fuel economy of internal combustion engine | — | 1982-04-27 |