Patents by Inventor James T. Renshaw

James T. Renshaw 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: 5380794
    Abstract: A vinyl composition tile formulation is disclosed which comprises polyvinyl chloride, inorganic fillers and from about 0.5% to about 4%, by weight of said formulation, polyvinyl butyral, as a tackifier.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: January 10, 1995
    Assignee: Monsanto Company
    Inventors: Richard E. Schaefer, James T. Renshaw, Peter M. Maino
  • Patent number: 4423178
    Abstract: In production of solid films (e.g. a floor covering wear layer) from vinyl chloride polymer plastisols, good physical properties of the plastisols and films are provided by use of a plasticizer containing 50-90% prime ester at least about 40 parts per hundred parts by weight of which is aromatic diester selected from alkyl benzyl succinates, glutarates and mixtures thereof, up to 20% hydrocarbon boiling at 200.degree.-325.degree. C. and 10-50% non-aromatic diester having a molecular weight of 230-300. Using such a plasticizer, the plastisols and films can be conveniently plasticized with relatively small amounts of prime ester, and the films containing such small amounts of prime ester have unusually high stain resistance.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: December 27, 1983
    Assignee: Monsanto Company
    Inventor: James T. Renshaw
  • Patent number: 4313866
    Abstract: In production of solid films (e.g. a floor covering wear layer) from vinyl chloride polymer plastisols, good physical properties of the plastisols and films are provided by use of a plasticizer containing 50-90% prime ester at least about 40 parts per hundred parts by weight of which is aromatic diester selected from alkyl benzyl succinates, glutarates and mixtures thereof, up to 20% hydrocarbon boiling at 200.degree.-325.degree. C. and 10-50% non-aromatic diester having a molecular weight of 230-300. Using such a plasticizer, the plastisols and films can be conveniently plasticized with relatively small amounts of prime ester, and the films containing such small amounts of prime ester have unusually high stain resistance.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: February 2, 1982
    Assignee: Monsanto Company
    Inventor: James T. Renshaw
  • Patent number: 3950198
    Abstract: Vinyl plastisols are fused to heat-sensitive primary backings and facing yarns integral therewith and expanded thereon by the application of a heating medium in the form of high velocity steam or a high velocity gas. Although the temperature of the heating medium is above the softening point of the heat-sensitive primary backing, the velocity of the heating medium and the angle at which it is directed against the plastisol-coated, heat-sensitive primary backing results in fusion and expansion of the vinyl plastisol on the heat-sensitive primary backing without damage to the backing material or facing materials associated therewith.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: April 13, 1976
    Assignee: Monsanto Company
    Inventors: Joseph A. Cannon, John F. Pysz, Jr., James T. Renshaw