David A. Hutchison

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Naperville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Medium speed diesel engine lubricating oils
- Patent number 5,174,915
- Issue date Dec 29, 1992
- Ethyl Petroleum Additives, Inc.
- David A. Hutchison
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chlorine-free silver protective lubricant composition (I)
- Patent number 4,948,523
- Issue date Aug 14, 1990
- Amoco Corporation
- David A. Hutchison
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chlorine-free silver protective lubricant composition (II)
- Patent number 4,871,465
- Issue date Oct 3, 1989
- Amoco Corporation
- David A. Hutchison
- C07 - ORGANIC CHEMISTRY