Patents & Trademarks

Patents

The following Letters Patent cover one or more of the products manufactured
by D-Mark, Inc.

United States

  • 4,227,904
  • 4,699,681
  • 5,124,177
  • 5,338,340
  • 5,569,489
  • 6,878,193

Canadian

  • 1,098,452
  • 1,337,550
  • 2,222,122
  • 2,454,738

Mexican

  • 244,272

Foreign Patents Issued

Trademarks

The following are registered Trademarks of D-Mark, Inc.

  • Adsorball
  • Carbonweb
  • OdorGuard
  • D-Mark
  • A Breath of Fresh Air
  • The Carbon Filter Specialists