Patents by Inventor Donald L. Kiser

Donald L. Kiser 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).

  • Removal of water from aqueous alcohol mixtures
    Patent number: 4868346
    Abstract: Process for removing water from mixtures of alcohols and water by contacting such a mixture with a substantially dehydrated solid absorbent which comprises particulate starch-containing vegetable matter such as corn starch, potato starch, cracked corn, corn hulls, grains such as barley, wheat, rye, sorghum, oats, milo and the like.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: September 19, 1989
    Assignee: Grain Processing Corporation
    Inventor: Donald L. Kiser
  • Removal of water from aqueous alcohol mixtures
    Patent number: 4696720
    Abstract: The present invention involves a process for removing water from mixtures of alcohols and water by contacting such a mixture with an ion exchange resin of either the cation or anion type. Prior to use for alcohol dehydration, the ion exchange resin itself is dehydrated if necessary or desired by contacting it with methanol, propanol, isopropanol, acetone or other like low molecular weight hydrophilic solvents. After use for alcohol dehydration, the ion exchange resin is regenerated by contacting it with these regenerating agents.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: September 29, 1987
    Assignee: Grain Processing Corporation
    Inventor: Donald L. Kiser
  • Regeneration of molecular sieves
    Patent number: 4319057
    Abstract: Molecular sieves used for dehydration are regenerated with methanol or acetone.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: March 9, 1982
    Assignee: Grain Processing Corporation
    Inventor: Donald L. Kiser