Patents by Inventor William Larkins

William Larkins 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).

  • Stabilized vinyl chloride polymer compositions
    Patent number: 3933741
    Abstract: The heat stability imparted to vinyl polymers by a given concentration of certain sulfur-containing organotin compounds is not adversely affected with respect to either long term stability or delay in appearance of initial discoloration when a portion of the sulfur-containing organotin compound is replaced by certain less effective organotin stabilizers, including tetraorganotin compounds and diorganotin carboxylates.
    Type: Grant
    Filed: September 17, 1974
    Date of Patent: January 20, 1976
    Assignee: M & T Chemicals Inc.
    Inventors: William A. Larkin, Robert C. Ringwood, Jr.
  • Method for recovering solubilized organotin halides
    Patent number: 3931264
    Abstract: Certain organotin halides can be recovered in substantially quantitative yield from their aqueous solutions by adding a non-reactive highly soluble inorganic salt to partially or completely saturate the solution and then heating the resultant solution as required to effect a separation of the organotin halide from the aqueous phase.
    Type: Grant
    Filed: August 22, 1974
    Date of Patent: January 6, 1976
    Assignee: M & T Chemicals Inc.
    Inventors: William A. Larkin, Jean W. Bouchoux