Patents by Inventor John F. Harris, Jr.

John F. Harris, Jr. 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).

  • Unsaturated silylated vinyl alcohol polymers
    Patent number: 4739021
    Abstract: Unsaturated silylated vinyl alcohol polymers, derivatives thereof, and processes for their preparation.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: April 19, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John F. Harris, Jr.
  • Bis(aminoneopentyl) aromatics
    Patent number: 4564705
    Abstract: Aromatic-aliphatic diamines of the formula ##STR1## in which Ar is an arylene or substituted arylene are useful in preparing thermally stable, rigid, polyamides, polyureas and polyurethanes having a repeating unit of the formula ##STR2## in which Ar is arylene or substituted arylene, X is --NH-- or --O--, n is 0 or 1, and R is a divalent organic radical.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: January 14, 1986
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: August H. Frazer, John F. Harris, Jr.
  • Bis(aminoneopentyl) aromatics and polyamides derived therefrom
    Patent number: 4451642
    Abstract: Aromatic-aliphatic diamines of the formula ##STR1## in which Ar is an arylene or substituted arylene are useful in preparing thermally stable, rigid, polyamides, polyureas and polyurethanes having a repeating unit of the formula ##STR2## in which Ar is arylene or substituted arylene, X is --NH-- or --O--, n is 0 or 1, and R is a divalent organic radical. Polymers of this invention can be melt-spun into thermally stable fibers.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: August H. Frazer, John F. Harris, Jr.
  • Anisotropic melt polyesters of 6-hydroxy-2-naphthoic acid
    Patent number: 4447592
    Abstract: Melt-processible polyester which is optically anisotropic in the melt phase and which consists essentially of the following molar amounts of the recurring units, with the sum of the molar amounts being 100%:(a) about 20 to about 85%, of ##STR1## (b) about 15 to about 80% of approximately equimolar amounts of ##STR2## wherein each of X.sup.1, X.sup.2, X.sup.3, and X.sup.4 is independently selected from H, Cl, and CH.sub.3 ;Ar is selected from 1,4-phenylene, 1,3-phenylene, 4,4'-oxybiphenylene, 4,4'-biphenylene, and 2,6-naphthylene;Ar.sup.1 is selected from ##STR3## and n is 0 or 1.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: May 8, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John F. Harris, Jr.
  • Polymers from phenylterephthalic acid
    Patent number: 4391966
    Abstract: Melt-spinnable, anisotropic melt-forming aromatic polyesters prepared from phenylterephthalic acid or mixtures thereof with terephthalic acid, one or more selected aromatic diols, and 4-hydroxybenzoic acid; and filaments of such polyesters, the tenacity of which filaments can be increased by heat treatment.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: July 5, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John F. Harris, Jr.
  • Polymers from phenylterephthalic acid
    Patent number: 4294955
    Abstract: Melt-spinnable anisotropic-melt-forming aromatic polyesters are prepared from phenylterephthalic acid or mixtures thereof with one or more selected aromatic dicarboxylic acids and one or more selected aromatic diols. The tenacity of as-spun filaments from these polyesters can be increased by heat treatment.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: October 13, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John F. Harris, Jr.
  • Carboxylated copolymers of isobutylene and a vinylbenzene
    Patent number: 4145490
    Abstract: Graft copolymers of the formulaX.sub.m Y.sub.n Y'.sub.p (Z.sub.q).sub.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: March 20, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John F. Harris, Jr., William H. Sharkey
  • Bis(2-methyl-2-cyanopropyl) aromatics
    Patent number: 4130579
    Abstract: Aromatic-aliphatic dinitriles of the formula ##STR1## in which Ar is an arylene or substituted arylene are useful in the preparation of the corresponding amines which are intermediates for the preparation of thermally stable, rigid, polyamides.
    Type: Grant
    Filed: June 8, 1977
    Date of Patent: December 19, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: August H. Frazer, John F. Harris, Jr., Elmore L. Martin