Patents by Inventor John E. Leland

John E. Leland 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).

  • Poly(arylene sulfide) compositions
    Patent number: 4504551
    Abstract: At least one of certain silanes is added to a poly(arylene sulfide) composition. The silane increases the electrical insulation resistance of the composition.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: March 12, 1985
    Assignee: Phillips Petroleum Company
    Inventor: John E. Leland
  • Poly(arylene sulfide) containing talc
    Patent number: 4482668
    Abstract: An electrical insulation composition containing poly(arylene sulfide) and talc having a median particle size not exceeding about 4 microns.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: November 13, 1984
    Assignee: Phillips Petroleum Company
    Inventors: John E. Leland, Paul J. Boeke
  • Poly(arylene sulfide) composition containing titanium dioxide and 3-mercaptopropyltrimethoxysilane
    Patent number: 4448918
    Abstract: An electrical insulation composition containing poly(arylene sulfide), titanium dioxide and 3-mercaptopropyltrimethoxysilane.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: May 15, 1984
    Assignee: Phillips Petroleum Company
    Inventor: John E. Leland
  • Laser printable polyarylene sulfide compositions
    Patent number: 4443571
    Abstract: The six compositions, nickel-antimony-titanium, lead chromate-lead molybdate, quinacridone, monoazo-nickel complex, cobalt-zinc-silica, and lead chromate, provide a polyarylene sulfide composition containing one or more of these with high contrast laser printability.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 17, 1984
    Assignee: Phillips Petroleum Company
    Inventors: Donald G. Needham, John E. Leland
  • Thermosetting composition combined high vinyl diolefin polymer with high vinyl low vinyl diolefin polymer
    Patent number: 4370448
    Abstract: A thermosetting composition in which high vinyl diolefin polymer chosen from among homopolymers of 1,3-butadiene and copolymers of 1,3-butadiene with styrene are admixed with about 15 to about 35 weight percent of the total polymer phase of a normally solid, elastomeric 1,3-butadiene homopolymer having high vinyl and low vinyl segments in a weight ratio of about 60:40 to about 40:60. Preferably the thermosetting composition also contains from about 15 to about 35 weight percent of the total polymeric phase of a normally solid rubbery polymer of isobutylene.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: January 25, 1983
    Assignee: Phillips Petroleum Company
    Inventor: John E. Leland