Patents Assigned to Marcole, Inc.
  • 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