Patents Assigned to Advanced Coatings International
  • Waterborne photoresists for use in manufacture of printed circuit boards
    Patent number: 6444378
    Abstract: A waterborne photoimageable composition or photoresist comprises a latex binder polymer based on a waterborne dispersion of a photopolymerizable urethane acrylate oligomer having sufficient carboxylic acid functionality to render it develop able in alkaline aqueous solution and a photo initiator chemical system and other components to produce an aqueous coatable and alkali develop able photoresist composition.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: September 3, 2002
    Assignee: Advanced Coatings International Ltd.
    Inventor: Steven M. Johnson
  • Waterborne photoresists made from urethane acrylates
    Patent number: 6207346
    Abstract: A waterborne photoimageable composition or photoresist comprises a latex binder polymer based on a waterborne dispersion of a photopolymerizable urethane acrylate oligomer having sufficient carboxylic acid functionality to render it develop able in alkaline aqueous solution and a photo initiator chemical system and other components to produce an aqueous coatable and alkali develop able photoresist composition.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: March 27, 2001
    Assignee: Advanced Coatings International
    Inventor: Steven M. Johnson