TREA

Ashok K. R. Dewan

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drilling fluids comprising polycyclic polyether polyol
    • Patent number 5,248,665
    • Issue date Sep 28, 1993
    • Shell Oil Company
    • Arthur H. Hale
  • Information Patent Grant

    Method for drilling wells
    • Patent number 5,083,622
    • Issue date Jan 28, 1992
    • Shell Oil Company
    • Arthur H. Hale
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Drilling fluids
    • Patent number 5,076,373
    • Issue date Dec 31, 1991
    • Shell Oil Company
    • Arthur H. Hale
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Gas hydrate inhibition
    • Patent number 5,076,364
    • Issue date Dec 31, 1991
    • Shell Oil Company
    • Arthur H. Hale
    • E21 - EARTH DRILLING MINING