Patents by Inventor Gordon Christopher Smith

Gordon Christopher Smith 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).

  • Manufacturing method for color proofing elements
    Patent number: 6194123
    Abstract: Water coatable and water developable negative-acting color proofing single sheet and overlay systems are described. The water-soluble photosensitive color layer employed in each type of proofing construction includes a photopolymerizable polymer having a weight-average molecular weight between 5,000 and 100,000; an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300; and a water-soluble photoinitiator.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: February 27, 2001
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gordon Christopher Smith, Hamid Barjesteh, James Alan Bonham
  • Aqueous developable color proofing elements
    Patent number: 6010821
    Abstract: Water coatable and water developable negative-acting color proofing single sheet and overlay systems are described. The water-soluble photosensitive color layer employed in each type of proofing construction includes a photopolymerizable polymer having a weight-average molecular weight between 5,000 and 100,000; an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300; and a water-soluble photoinitiator.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: January 4, 2000
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gordon Christopher Smith, Hamid Barjesteh, James Alan Bonham