Patents by Inventor Kris A. Johnson

Kris A. Johnson 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).

  • Method for separating methacrylic acid from isobutyric acid
    Patent number: 4671857
    Abstract: The distillative separation of methacrylic acid from isobutyric acid is significantly improved by the introduction into the distillation system of a third component selected from the group consisting of methyl methacrylate, methyl isobutyrate and dimethylformamide.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: June 9, 1987
    Assignee: Eastman Kodak Company
    Inventor: Kris A. Johnson