Patents by Inventor Robert A. Meintrup

Robert A. Meintrup 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).

  • Preparation of a cationic starch paste
    Patent number: 4554021
    Abstract: A process for preparing a cationic starch dispersion wherein an alkaline, gelatinized starch is reacted with a cationic reagent either concurrently with, or subsequently to, the cooking process resulting in a product in which the cationic reagent is chemically bound to the starch molecule. The process is conducive to on-site preparation of a cationic starch derivative which can be utilized without additional treatment as a papermaking adjunct, textile size, waste-water treatment or tailings flocculent, etc.
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: November 19, 1985
    Assignee: Grain Processing Corporation
    Inventors: Richard D. Harvey, E. Daniel Hubbard, Robert A. Meintrup
  • Laminated absorbent process
    Patent number: 4260443
    Abstract: A laminate of tissue-like materials having a liquid absorbing agent fixed in position between lamina.
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: April 7, 1981
    Assignee: Grain Processing Corporation
    Inventors: William F. Lindsay, Robert A. Meintrup, Howard J. Slawny