Patents by Inventor Karen M. Keys

Karen M. Keys 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 anhydrous alkanesulfonic acid
    Patent number: 4938846
    Abstract: A process for the removal of water from a lower alkanesulfonic acid-water mixture by causing the mixture to run down the internal walls of two vertical evaporator columns operated in series, is disclosed herein.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: July 3, 1990
    Assignee: Atochem, North America, Inc.
    Inventors: Perry D. Comstock, Karen M. Keys