Patents by Inventor Cesar O. Castro

Cesar O. Castro 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: 5281670
    Abstract: It is herein provided a polymer blend comprising of polybutylene and a functionalized polyolefin such as maleated polypropylene. The blend has and exhibits an unexpectedly high degree of adhesion to polar polymers and metal surfaces, and enhances the use of polybutylene in applications for which adhesion to polar surfaces is required.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: January 25, 1994
    Assignee: Shell Oil Company
    Inventors: Robert W. Lee, Meredith S. Ott, Cesar O. Castro
  • Patent number: 5073414
    Abstract: A coated object is produced by flame spraying the object with a substantially molten polymeric material which comprises a blend containing polybutylene homopolymer or copolymer and an adhesion promoter.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: December 17, 1991
    Assignee: Shell Oil Company
    Inventor: Cesar O. Castro
  • Patent number: H1284
    Abstract: A coated object is produced by flame spraying the object with a substantially molten polymeric material which comprises a blend containing polybutylene homopolymer or copolymer, an adhesion promoter and a nucleating agent.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: February 1, 1994
    Assignee: Shell Oil Co.
    Inventor: Cesar O. Castro
  • Patent number: H1301
    Abstract: It is herein disclosed a method for controlling the shrinkage of parts formed from semi-crystalline polyolefin involving the addition of a suitable nucleant(s), in a suitable amount. This method results in reduced processing costs primarily due to reduced processing cycle time and to greater flexibility in the use of processing equipment.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: April 5, 1994
    Assignee: Shell Oil Company
    Inventors: Robert W. Lee, Cesar O. Castro, Jennifer L. Engle