Patents by Inventor Arnold R. Lee

Arnold R. Lee 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).

  • Carbohydrate products of photosynthesis as charging adjuvant for positive liquid electrostatic developers
    Patent number: 5077171
    Abstract: An electrostatic liquid developer having positive charging characteristics consisting essentially of:(A) a non-polar liquid having a Kauri-butanol value of less than 30, present in a major amount,(B) thermoplastic resin particles having an average by area particle size of less than 10 .mu.m,(C) a nonpolar liquid soluble ionic or zwitterionic charge director compound, and(D) a carbohydrate product of photosynthesis comprised of at least one saccharose present in (A) and/or dispersed in (B).The liquid developer is useful in copying, color proofing, digital color proofing, making lithographic printing plates, and resists.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: December 31, 1991
    Assignee: DX Imaging
    Inventors: James R. Larson, Arnold R. Lee