Patents by Inventor Renita J. Freeze

Renita J. Freeze 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).

  • Fast drying jet ink composition
    Patent number: 6221933
    Abstract: The present invention provides a fast drying jet ink composition comprising an organic solvent, a colorant, a polyamine, and an acidic resin. The acidic resin preferably has an acid number of from about 10 to about 250. Examples of suitable polyamines include dendrimers and aminoacrylates. The jet ink composition can be used to print on glass surfaces that have a condensation of moisture on them. The printed messages do not easily rub off after exposure to humid conditions. The messages printed on glass can be washed off by a caustic solution.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: April 24, 2001
    Assignee: Marconi Data Systems Inc.
    Inventors: Linfang Zhu, John P. Folkers, Mark A. Chamerlik, Renita J. Freeze