Patents by Inventor Harry Ryan Dennis

Harry Ryan Dennis 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).

  • Organoclay products containing a branched chain alkyl quaternary ammonium ion
    Patent number: 5739087
    Abstract: Organoclay compositions which comprise the reaction product of a smectite-type clay having an ion exchange capacity of at least 50 meq. wt. per 100 g. clay (active basis), and a branched chain quaternary ammonium compound are useful self-activating and self-dispersing additives to liquid organic systems such as grease and ink formulations. Also included are grease and ink formulations using these organoclay compositions.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: April 14, 1998
    Assignee: Southern Clay Products, Inc.
    Inventor: Harry Ryan Dennis
  • Formulations including improved organoclay compositions
    Patent number: 5728764
    Abstract: Organoclay compositions which comprise the reaction product of a smectite-type clay having an ion exchange capacity of at least 50 meq. wt. per 100 g. clay (active basis), and an alkoxylated quaternary ammonium compound having one or two alkoxylated chains containing 0-10 moles ethylene oxide and 3-15 moles of propylene or butylene oxide residues are useful thixotropic materials, especially for the preparation of aqueous systems.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: March 17, 1998
    Assignee: Southern Clay Products, Inc.
    Inventors: Carl J. Bauer, John D. Boothe, Harry Ryan Dennis, Clois E. Powell