Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8961623 | Quaternary ammonium amide and/or ester salts | Paul R. Stevenson, James C. Ray, James H. Bush | 2015-02-24 |
| 8821596 | Nitrogen-free deposit control fuel additives and one step process for the making thereof | Paul R. Stevenson, William R. S. Barton, David C. Arters, Jeffry G. Dietz | 2014-09-02 |
| 8476207 | Quaternary ammonium salt detergents for use in lubricating compositions | William R. S. Barton, Mark C. Davies, Paul R. Stevenson, Dean Thetford | 2013-07-02 |
| 8153570 | Quaternary ammonium salt detergents for use in lubricating compositions | William R. S. Barton, Mark C. Davies, Paul R. Stevenson, Dean Thetford | 2012-04-10 |
| 8147569 | Quaternary ammonium salt detergents for use in fuels | William R. S. Barton, Mark C. Davies | 2012-04-03 |
| 7951211 | Quaternary ammonium salt detergents for use in fuels | William R. S. Barton, Mark C. Davies, Paul R. Stevenson, Dean Thetford | 2011-05-31 |
| 7947093 | Quaternary ammonium salt detergents for use in fuels | William R. S. Barton, Mark C. Davies, Paul R. Stevenson, Dean Thetford | 2011-05-24 |
| 7456136 | Linear compounds containing phenolic and salicylic units | Stephen J. Cook, David Cressey | 2008-11-25 |
| 6913630 | Amino alkylphenol emulsifiers for an aqueous hydrocarbon fuel | Brian B. Filippini, John W. Forsberg, Thomas F. Steckel, Rodney J. McAtee | 2005-07-05 |
| 6802874 | Linear compounds containing phenol and salicylic acid units | Rodney J. McAtee | 2004-10-12 |
| 6673751 | Boron containing overbased calixarates and lubricants and methods thereof | David Cressey, D. John Durham | 2004-01-06 |
| 6596038 | Linear compounds containing phenol and salicylic acid units | Rodney J. McAtee | 2003-07-22 |
| 6514297 | Detergents for use in preventing formation of iron complexes in hydrocarbon fuels | Rodney J. McAtee | 2003-02-04 |
| 6379530 | Polyisobutene substituted succinimides | — | 2002-04-30 |
| 6328771 | Fuel compositions containing lubricity enhancing salt compositions | — | 2001-12-11 |
| 6235068 | Fuel composition | — | 2001-05-22 |
| 6200936 | Salicyclic calixarenes and their use as lubricant additives | — | 2001-03-13 |
| 6174844 | Overbased metal calixarates, their preparation and lubricating oil compositions containing them | — | 2001-01-16 |
| 6133206 | Lubricating oil additives | Benjamin Patrick Gracey | 2000-10-17 |
| 6117198 | Detergents for hydrocarbon fuels | — | 2000-09-12 |
| 5876468 | Detergents for hydrocarbon fuels | — | 1999-03-02 |
| 5780403 | Ash-free detergents their preparation and use in lubricating oil compositions | — | 1998-07-14 |
| 5734078 | Alkylation process | Andrew Feilden, Charles Thomas | 1998-03-31 |
| 5670462 | Lubricating oil additives | Douglas Barr, Alexander F. Psaila | 1997-09-23 |
| 5602084 | Detergent additives for lubricating oils, their preparation and use | — | 1997-02-11 |