TREA

Arthur J. Ellsworth

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  • South St. Paul, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Nonabrasive magnetic recording tape
    • Patent number 4,778,714
    • Issue date Oct 18, 1988
    • Minnesota Mining and Manufacturing Company
    • Karen M. Woolley
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,732,812
    • Issue date Mar 22, 1988
    • Minnesota Mining and Manufacturing Company
    • Stephen R. Ebner
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...