Patents by Inventor Carolyn J. Kucharz

Carolyn J. Kucharz 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).

  • Process for regenerating spent acid-activated bentonite clays and smectite catalysts
    Patent number: 5468701
    Abstract: A three step process for regenerating spent bleaching clays and acid-activated smectite catalyst granules includes: (1) an extraction step to remove a majority of entrained oil, preferably about 75% to about 95% by weight of the entrained oil, when regenerating bleaching clays; (2) an oxidation step to remove the majority of remaining carbonaceous adsorbates which are not removed by the preceding extraction step, and (3) an acid wash step to restore the acidity normally associated with fresh acid-activated bleaching clays. The features of steps 2 and 3 may be combined into a single step by using an appropriate oxidant, for example, a source of acidic protons, such as peracetic acid.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: November 21, 1995
    Assignee: American Colloid Company
    Inventors: Robert S. Nebergall, Dennis R. Taylor, Carolyn J. Kucharz
  • Process for regenerating spent acid-activated bentonite clays and smectite catalysts
    Patent number: 5358915
    Abstract: A three step process for regenerating spent bleaching clays and acid-activated smectite catalyst granules includes: (1) an extraction step to remove a majority of entrained oil, preferably about 75% to about 95% by weight of the entrained oil, when regenerating bleaching clays; (2) an oxidation step to remove the majority of remaining carbonaceous adsorbates which are not removed by the preceding extraction step, and (3) an acid wash step to restore the acidity normally associated with fresh acid-activated bleaching clays. The features of steps 2 and 3 may be combined into a single step by using an appropriate oxidant, for example, a source of acidic protons, such as peracetic acid.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: October 25, 1994
    Assignee: American Colloid Company
    Inventors: Robert S. Nebergall, Dennis R. Taylor, Carolyn J. Kucharz