Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7736525 | Method of making an alkoxylated polyethylenimine product | Chacko Thankachan, Klaus Friedrich | 2010-06-15 |
| 5673733 | Engine coolant removal and refill method and device | David E. Turcotte, John J. Conville, Stephen M. Zeld, James T. Lyon | 1997-10-07 |
| 5649574 | Engine coolant removal and refill method and device | David E. Turcotte, John J. Conville, Stephen M. Zeld, James T. Lyon | 1997-07-22 |
| 5511590 | Engine coolant removal and refill method and device | David E. Turcotte, John J. Conville, Stephen M. Zeld, James T. Lyon | 1996-04-30 |
| 5071582 | Coolant system cleaning solutions having silicate or siliconate-based corrosion inhibitors | John J. Conville, James T. Lyon, David E. Turcotte, Stanley T. Hirozawa, Shrikant V. DeSai | 1991-12-10 |
| 5062987 | Cooling system cleaning solutions | David E. Turcotte | 1991-11-05 |
| 4626366 | Functional fluids and concentrates containing associative polyether thickeners and certain metal dialkyldithiophosphates | Mark A. Frentrup, Stanley T. Hirozawa, James E. Carson | 1986-12-02 |
| 4588511 | Functional fluids and concentrates containing associative polyether thickeners and certain metal dialkyldithiophosphates | Mark A. Frentrup, Stanley T. Hirozawa, James E. Carson | 1986-05-13 |