TREA

David J. Halverson

Follow

Person

  • Long Lake, MN, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Methods and compositions for coating aluminum substrates
    • Patent number 9,039,821
    • Issue date May 26, 2015
    • BIRCHWOOD LABORATORIES LLC
    • William V. Block
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Methods and compositions for coating aluminum substrates
    • Patent number 8,691,346
    • Issue date Apr 8, 2014
    • Birchwood Laboratories, Inc.
    • William V. Block
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Metal coloring process
    • Patent number 5,723,183
    • Issue date Mar 3, 1998
    • Birchwood Laboratories, Inc.
    • Richard K. Williams
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents