Patents by Inventor William Albert Larkin

William Albert Larkin 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).

  • Catalyst for low temperature cure of blocked isocyanates
    Patent number: 5902871
    Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water.The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150.degree. C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150.degree. C. to obtain a cured urethane or thiourethane.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: May 11, 1999
    Assignee: Elf Atochem North America, Inc.
    Inventors: Emily Carol Bossert, Wayne Ranbom, William Albert Larkin
  • Catalyst for low temperature cure of blocked isocyanates
    Patent number: 5880178
    Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: March 9, 1999
    Assignee: Elf Atochem North America, Inc.
    Inventors: Emily Carol Bossert, Wayne Ranbom, William Albert Larkin
  • Liquid methyltin halide compositions
    Patent number: 5853799
    Abstract: Liquid methyltin halide compositions and their use as intermediates in chemical synthesis and as precursors for forming tin oxide coatings on substrates are disclosed.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: December 29, 1998
    Inventor: William Albert Larkin
  • Liquid methyltin halide compositions
    Patent number: 5725904
    Abstract: Liquid methyltin halide compositions and their use as intermediates in chemical synthesis and as precursors for forming tin oxide coatings on substrates are disclosed.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 10, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: William Albert Larkin
  • Catalyst for low temperature cure of blocked isocyanates
    Patent number: 5718817
    Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water. The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150.degree. C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150.degree. C. to obtain a cured urethane or thiourethane.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: February 17, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventors: Emily Carol Bossert, Wayne Ranbom, William Albert Larkin