TREA

Donald J. Clarke

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  • Cold Spring, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lubricating oil containing a Mannich base
    • Patent number 4,877,834
    • Issue date Oct 31, 1989
    • Texaco Inc.
    • Christopher S. Liu
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Lubricating oil containing a mannich base
    • Patent number 4,780,230
    • Issue date Oct 25, 1988
    • Texaco Inc.
    • Christopher S. Liu
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...