Patents by Inventor Timothy M. Boyd

Timothy M. Boyd 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).

  • Subtractive developer for lithographic plates
    Patent number: 4130425
    Abstract: An improved subtractive developer for use on lithographic plates is disclosed and claimed. More particularly, a subtractive developer which is comprised of alcohols of lower alkyls in combination of approximately equal parts with a complex mixture of water, ethylene glycol monobutyl ether, surface active synthetic detergent soap, free fatty carboxylic acid, and inorganic phosphate.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: December 19, 1978
    Assignee: Marcole, Inc.
    Inventor: Timothy M. Boyd