Patents by Inventor Michael C. Grebinoski

Michael C. Grebinoski 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).

  • Isophorone process
    Patent number: 5352839
    Abstract: Isophorone is made by the aldol condensation of acetone followed by separate steps to remove acetone, mesityloxide, and beta isophorone. Variations include recycling of mesityloxide and/or beta isophorone.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: October 4, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Michael C. Grebinoski, Donald Glassman, Carole L. Elias, Alain A. Schutz
  • Recovery of phenol from low concentrations with sodium sulfate
    Patent number: 5344528
    Abstract: Phenol plant waste water containing small amounts of phenol and sodium sulfate is successfully distilled through the addition of recovered sodium sulfate to enhance the volatility of the phenol relative to water; at least a portion of the sodium sulfate is recycled, while a significant portion of the phenol can be returned to the phenol plant for recovery.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: September 6, 1994
    Assignee: Aristech Chemical Corporation
    Inventors: Thomas H. Bossler, Donald Glassman, Michael C. Grebinoski, Howard H. Morgan, Jr., Jennifer L. Voss