Patents by Inventor George E. Alderfer

George E. Alderfer 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).

  • Coating composition for recording paper
    Patent number: 5804293
    Abstract: Printed matter of high optical density may be obtained by ink-jet printing techniques when the coating contains composite particulate amorphous precipitated silica having a calculated multimodal particle size distribution wherein the particle sizes at the modes are less than 10 micrometers.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: September 8, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Louis J. Nehmsmann, George E. Alderfer, Charles T. Hill
  • Ink jet printable coatings
    Patent number: 4732786
    Abstract: A coated ink jet printing substrate where said coating utilizes an insolubilized hydrophilic polymer.
    Type: Grant
    Filed: December 17, 1985
    Date of Patent: March 22, 1988
    Assignee: James River Corporation
    Inventors: Robert Patterson, David H. Hollenberg, Robert C. Desjarlais, George E. Alderfer