Patents by Inventor Andrew John Logan

Andrew John Logan 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).

  • Disperse dyestuff mixtures
    Patent number: 3995994
    Abstract: A process to color aromatic polyester textiles navy blue to black by dyeing, padding or printing with an aqueous dispersion of mixtures of four specified azo and anthraquinone disperse dyes.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: December 7, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin William Greenhalgh, Ronald Wynford Kenyon, Andrew John Logan
  • Disperse dyestuff mixtures
    Patent number: 3994679
    Abstract: A process to color in blue to black shades aromatic polyester textile materials by dyeing, padding or printing an aqueous dispersion of a dyestuff mixture of three or four specific azo and anthraquinone disperse dyes.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: November 30, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin William Greenhalgh, Ronald Wynford Kenyon, Andrew John Logan