Mara Stein

Person

  • Woburn, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Drilling compositions and methods

    • Patent number 6,153,669
    • Issue date Nov 28, 2000
    • Baroid Drilling Fluids, Inc.
    • David Diggs
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Drilling compositions and methods

    • Patent number 6,110,876
    • Issue date Aug 29, 2000
    • Baroid Drilling Fluids, Inc.
    • David Diggs
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Drilling compositions and methods

    • Patent number 5,888,943
    • Issue date Mar 30, 1999
    • Baroid Drilling Fluids, Inc.
    • David Diggs
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...