Patents by Inventor Woodrow Wilson Robbins

Woodrow Wilson Robbins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Calcium and magnesium salts of 4-(2-hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid for dyeing fiberglass
    Patent number: 4002605
    Abstract: Dyes of the formula: ##STR1## wherein M is a metal selected from calcium and magnesium and provided that where M is calcium the dye is in the beta crystalline form are superior dyes for the dyeing of fiberglass in that they are resistant to crystal growth in dye pastes and recycle process water in the dyeing of fiberglass. Thus, in the spray dyeing of the fiberglass the dyes do not tend to clog the nozzle of the spraying device as do the corresponding salts of monovalent metals, such as the sodium salt.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: January 11, 1977
    Assignee: American Cyanamid Company
    Inventors: Richard Benjamin Balsley, Herbert Soffer, Woodrow Wilson Robbins
  • Polyvalent metal salts of 7-hydroxy-8-[p-(phenylazo)phenylazo]-1,3-naphthalenedisulfonic acid for dyeing fiberglass
    Patent number: 4002603
    Abstract: Dyes of the formula: ##STR1## WHEREIN M is a metal selected from the group consisting of calcium, barium, strontium, magnesium, chromium, manganese, iron, cobalt, nickel, copper, and zinc and wherein n is an integer selected from 2 and 3 are superior dyes for the dyeing of fiberglass in that they are resistant to crystal growth in dye pastes and recycle process water in the dyeing of fiberglass thus, in the spray dyeing of the fiberglass the dyes do not tend to clog the nozzle of the spraying device as do the corresponding salts of monovalent metals, such as the disodium and dipotassium salts.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: January 11, 1977
    Assignee: American Cyanamid Company
    Inventors: Woodrow Wilson Robbins, Herbert Soffer, Richard Benjamin Balsley