Patents by Inventor R. Vernon Snelgrove

R. Vernon Snelgrove 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).

  • Patent number: 6627711
    Abstract: A process for polymerization of addition polymerizable monomers with a catalyst composition comprising a Group 4 or 5 metal bis(silane)amido complex corresponding to the formula: where the various substituents are as defined in claim 1.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: September 30, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Michael J. Mullins, Phillip S. Athey, Peter N. Nickias, Jorge Soto, Harold W. Boone, R. Vernon Snelgrove
  • Publication number: 20020147287
    Abstract: A process for polymerization of addition polymerizable monomers with a catalyst composition comprising a Group 4 or 5 metal bis(silane)amido complex corresponding to the formula: 1
    Type: Application
    Filed: March 22, 2002
    Publication date: October 10, 2002
    Inventors: Michael J. Mullins, Phillip S. Athey, Peter N. Nickias, Jorge Soto, Harold W. Boone, R. Vernon Snelgrove
  • Patent number: 5503929
    Abstract: A process for preparing a non-flammable linear non-graphitic carbonaceous polymeric fiber, yarn or tow having improved elongability containing the step of heat treating a linear stabilized polymeric fiber, yarn or tow having an LOI greater than 40 without any substantial tension or stress in an inert non-oxidizing atmosphere at a temperature so as to irreversibly heat set said fiber yarn or tow.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: April 2, 1996
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
  • Patent number: 5328764
    Abstract: A process for preparing a non-flammable linear non-graphitic carbonaceous polymeric fiber, yarn or tow having improved elongability which comprises the step of heat treating a linear stabilized polymeric fiber, yarn or tow having an LOI greater than 40 without any substantial tension or stress in an inert non-oxidizing atmosphere at a temperature so as to irreversibly heat set said fiber yarn or tow.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: July 12, 1994
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
  • Patent number: 5275875
    Abstract: A fibrous thermal insulation comprising an intimate blend of A) an effective amount of non-graphitic carbonaceous fibers having an LOI value greater than 40, a percent char value greater than 65, and a thermal conductivity less than 1 BTU hr ft.sup.2 /.degree.F. for providing a synergistic improvement in fire resistance, and B) hollow thermoplastic fibers.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: January 4, 1994
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, William G. Stobby, Burton D. Brubaker, Francis P. McCullough, R. Vernon Snelgrove
  • Patent number: 5223324
    Abstract: A flame retardant polymeric foam having a flame retarding amount of non-graphitic carbonaceous materials having an LOI value greater than 40.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: June 29, 1993
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Bhuvenesh C. Goswami, R. Vernon Snelgrove
  • Patent number: 5188896
    Abstract: A fibrous thermal insulation comprising an intimate blend of A) an effective amount of non-graphitic carbonaceous fibers having an LOI value greater than 40, a percent char value greater than 65, and a thermal conductivity less than 1 BTU hr ft.sup.2 /.degree.F. for providing a synergistic improvement in fire resistance, and B) hollow thermoplastic fibers.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: February 23, 1993
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Burton D. Brubaker, William G. Stobby, Francis P. McCullough, R. Vernon Snelgrove
  • Patent number: 5034267
    Abstract: A thermally stable metal coated carbonaceous fiber batting, fiber tow, yarn or fabric which maintains loft, has some degree of resiliency and some degree of stability in the presence of various concentrations of oxygen at elevated temperatures said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: July 23, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Steven L. Brewster, R. Vernon Snelgrove, George C. Higgins
  • Patent number: 5030509
    Abstract: A thermally stable ceramic and/or metal coated carbonaceous linear fiber batting, fiber tow, yarn or fabric which maintains some degree of stability in the presence of various concentrations of oxygen at elevated temperatures.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: July 9, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Steven L. Brewster, R. Vernon Snelgrove, George C. Higgins
  • Patent number: 5028477
    Abstract: A thermally stable ceramic coated carbonaceous fiber batting, fiber tow, yarn or fabric which maintains loft, has some degree of resiliency and some degree of stability in the presence of various concentrations of oxygen at elevated temperatures said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: July 2, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Steven L. Brewster, George C. Higgins
  • Patent number: 5024877
    Abstract: A means for improving the fire resistance of carbonaceous polymeric substance comprising a non-graphitic carbonaceous polymeric material having an LOI value greater than 40, produces a char formation greater than 65% and a thermoconductivity less than 1 BTU ft/Hr ft.sup.2 .degree.F. by utilizing an organosilicone polymer in an amount to provide ignition resistance. Also, there is provided a means for improving the fire resistance and thermal stability of resins and polymers.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: June 18, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, David M. Hall
  • Patent number: 5015522
    Abstract: A multicomponent polymeric fiber, film or foam having at least one component comprising fire resistant carbonaceous material and another component comprising non-carbonaceous material.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: May 14, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, David M. Hall
  • Patent number: 4997716
    Abstract: A fire retarding and fire shielding structural panel for a vehicle, comprising at least one compressed composite composed of a thermoplastic or thermosetting resin matrix containing a multiplicity of non-flammable carbonaceous fibers.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: March 5, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Frank W. Hale, Jeanne M. Giroux, David M. Hall
  • Patent number: 4987664
    Abstract: A process for producing an interlocked fibrous structure useful as a thermal insulating and/or sound absorbing structure comprising at least one batting of non-flammable carbonaceous fibers, by the steps comprising implanting said batting with non-carbonaceous polymeric fibers and then heat treating the structure in an inert atmosphere so as to transform said non-carbonaceous fibers into substantially permanently set carbonaceous fibers.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: January 29, 1991
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
  • Patent number: 4980233
    Abstract: A fire retarding and fire shielding structural panel for a vehicle, comprising at least one compressed composite composed of a thermoplastic or thermosetting resin matrix containing a multiplicity of non-flammable carbonaceous fibers.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: December 25, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove
  • Patent number: 4979274
    Abstract: An apparatus for crimping and permanently heat setting a fiber or tow without stress or tension, comprising a mechanical crimping means, a conveying means which receives the crimped fiber or tow, and a heating or irradiation zone through which the conveying means and fiber or tow passes.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: December 25, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Robert T. Patton, R. Vernon Snelgrove
  • Patent number: 4978571
    Abstract: A thermally stable metal coated carbonaceous fiber batting, fiber tow, yarn or fabric which maintains loft, has some degree of resiliency and some degree of stability in the presence of various concentrations of oxygen at elevated temperatures, said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: December 18, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Steven L. Brewster, R. Vernon Snelgrove, George C. Higgins
  • Patent number: 4965146
    Abstract: A primary rechargeable electrical energy storage device comprising a housing having an electrically non-conductive interior surface, at least one cell postioned in said housing, each cell comprising an anode consisting of a low melting metal selected from the group consisting of alkali metal, alkali metal alloy and alkali metal eutectic mixture, said anode having a barrier of lithium nitride, a separator surrounding said anode, said separator being capable of transporting ionic species and electrically isolating said anode, a cathode and a non-aqueous electrolyte.
    Type: Grant
    Filed: September 20, 1989
    Date of Patent: October 23, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Robert A. Cipriano, R. Vernon Snelgrove
  • Patent number: 4957807
    Abstract: The invention resides in a nonlinear heat set aromatic polyamide fiber having a reversible deflection of greater than 1.2:1 at ambient temperatures, an aspect ratio of greater than 10:1, and a bending strain value less than 50%, and the method of preparing said fiber.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: September 18, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Bhuvenesh C. Goswami, R. Vernon Snelgrove, David M. Hall
  • Patent number: 4956235
    Abstract: A thermally stable ceramic coated carbonaceous fiber batting, fiber tow, yarn or fabric which maintains loft, has some degree of resiliency and some degree of stability in the presence of various concentrations of oxygen at elevated temperatures said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: September 11, 1990
    Assignee: The Dow Chemical Company
    Inventors: Francis P. McCullough, Jr., Steven L. Brewster, R. Vernon Snelgrove, George C. Higgins