Gregory P. Liesen

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St Louis, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Fuel compositions containing phenolic antioxidants
- Patent number 5,045,089
- Issue date Sep 3, 1991
- Ethyl Petroleum Additives, Inc.
- William Y. Lam
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Phenolic antioxidant composition
- Patent number 5,009,802
- Issue date Apr 23, 1991
- Ethyl Corporation
- William Y. Lam
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Fuel compositions containing sulfur-bridged phenolic antioxidants
- Patent number 5,004,481
- Issue date Apr 2, 1991
- Ethyl Corporation
- William Y. Lam
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfur-bridged phenolic antioxidants
- Patent number 4,946,610
- Issue date Aug 7, 1990
- Ethyl Petroleum Additives, Inc.
- William Y. Lam
- C07 - ORGANIC CHEMISTRY