Patents by Inventor Percy L. Smith

Percy L. Smith 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: 4288571
    Abstract: The disclosure of this application is directed to unsaturated polyester compositions, containing as a low-profile additive a carboxyl containing thermoplastic polymer of a vinyl ester of an aliphatic, saturated monocarboxylic acid, which have particular utility in molding applications to form aesthetically attractive thermoset articles characterized by excellent physical properties, as for example, impact strength and by excellent surface properties such as excellent smoothness and gloss, excellent receptiveness to paints and excellent reproduction of the surface contours of the mold in which they are formed into shaped, thermoset articles.
    Type: Grant
    Filed: February 26, 1973
    Date of Patent: September 8, 1981
    Assignee: Union Carbide Corporation
    Inventors: Lowell R. Comstock, Percy L. Smith
  • Patent number: 4284736
    Abstract: The disclosure of this application is directed to unsaturated polyester compositions, containing a thermoplastic terpolymer of a vinyl halide monomer, a vinyl ester of a saturated, monocarboxylic acid and as the third component, an unsaturated, dicarboxylic acid or anhydride thereof; or as the third component, a glycidyl ester of an unsaturated, monocarboxylic acid, which can be pigmented with organic and/or inorganic pigments and molded into shaped, thermoset articles such as housings for telephones, automobile heater ducts and the like which are characterized by excellent surface characteristics and color properties.
    Type: Grant
    Filed: February 26, 1973
    Date of Patent: August 18, 1981
    Assignee: Union Carbide Corporation
    Inventors: Lowell R. Comstock, Percy L. Smith
  • Patent number: RE31975
    Abstract: The disclosure of this application is directed to unsaturated polyester compositions, containing as a low-profile additive a carboxyl containing thermoplastic polymer of a vinyl ester of an aliphatic, saturated monocarboxylic acid, which have particular utility in molding applications to form aesthetically attractive thermoset articles characterized by excellent physical properties, as for example, impact strength and by excellent surface properties such as excellent smoothness and gloss, excellent receptiveness to paints and excellent reproduction of the surface contours of the mold in which they are formed into shaped, thermoset articles.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: August 27, 1985
    Assignee: Union Carbide Corp.
    Inventors: Lowell R. Comstock, Percy L. Smith