Patents Represented by Attorney Don M. Sell

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  • Image enhancement of photothermographic elements
    Patent number: 4460681
    Abstract: Color photothermographic articles are prepared by having the various color-forming layers separated by organic solvent soluble barrier layers insoluble in the organic solvent used to coat at least one of the adjacent color-forming layers.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: July 17, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert A. Frenchik