Patents Assigned to Tulco, Inc.
  • Water-repellent coating compositions and method for their preparation
    Patent number: 4102703
    Abstract: There are provided water-repellent compositions comprising hydrophobic, finely-divided particulate metal or metalloid oxides. The compositions of the invention are useful in imparting water-repellent properties to porous substrates coated therewith.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: July 25, 1978
    Assignee: Tulco, Inc.
    Inventor: Paul Raymond Tully