Patents by Inventor Nelson C. Bletso

Nelson C. Bletso 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).

  • Crosslinkable polyester body solder of powdered metal
    Patent number: 4496673
    Abstract: A blend of about an equivalent of a carboxyl terminated polyester having a carboxyl end group equivalent weight of 900 to 1200 with 0.8 to 1.2 equivalents of an epoxy curing agent having an equivalent weight of about 70 to 1000, 0 to 50% by weight of a copolyester melt adhesive and sufficient powdered metal to make 20 to 70% but preferably about 30 to 50% metal by weight based on recipe without the copolyester melt adhesive.
    Type: Grant
    Filed: October 1, 1982
    Date of Patent: January 29, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul L. Heater, Jr., Nelson C. Bletso, William C. T. Tung
  • Process to control the curing reaction between a copolyester resin and an epoxide compound, and a composition formed for that process
    Patent number: 4365046
    Abstract: A copolyester resin having modified termini is disclosed, as well as the method for making and using that compound in subsequent reactions with epoxide curing compounds. The polymerization of the copolyester resin may include a compounding preparation stage for modifying the termini of the copolyester resin by reacting those end groups with an aromatic acid to alter the activation energy necessary to cure the modified copolyester resin with the epoxide compound upon mixing and heating of that mixture in a powder coating upon a substrate. The modified copolyester resin improves impact strength and leveling properties between 300.degree. and 450.degree. F., which is desirable for protection of the underlying substrate.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: December 21, 1982
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Patrick J. Pesata, Jr., Harlan W. Frerking, Jr., Nelson C. Bletso
  • Process to control the curing reaction between a copolyester resin and an epoxide compound, and a composition formed for that process
    Patent number: RE32029
    Abstract: A copolyester resin having modified termini is disclosed, as well as the method for making and using that compound in subsequent reactions with epoxide curing compounds. The polymerization of the copolyester resin may include a compounding preparation stage for modifying the termini of the copolyester resin by reacting those end groups with an aromatic acid to alter the activation energy necessary to cure the modified copolyester resin with the epoxide compound upon mixing and heating of that mixture in a powder coating upon a substrate. The modified copolyester resin improves impact strength and leveling properties between 300.degree. and 450.degree. F., which is desirable for protection of the underlying substrate.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: November 12, 1985
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Patrick J. Pesata, Jr., Harlan W. Frerking, Jr., Nelson C. Bletso