Patents by Inventor Edmund Arthur Flexman, Jr.

Edmund Arthur Flexman, 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).

  • Copolyester elastomer compositions and fusion bonded articles
    Patent number: 6312824
    Abstract: The invention provides a composition that exhibits good adhesion to polyamide material and other materials, comprising 60 to 99 weight percent of a copolyester elastomer, and 1 to 40 weight percent of a novolac resin, based on the total weight of the copolymer elastomer and the novolac resin only, wherein the composition comprises greater than 50 weight percent copolyester elastomer based on the total weight of the composition. The invention also concerns an article comprising at least two materials bonded together at one or more defined contact surfaces, a first one of the bonded materials comprising a copolyester elastomer and a novolac resin. Such bodies can be welded, injection molded, and extruded simultaneously or sequentially.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: November 6, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jean-Michel Philippoz, Edmund Arthur Flexman, Jr.
  • Toughened thermoplastic polymer compositions
    Patent number: 5817723
    Abstract: A toughened thermoplastic polymer composition comprising (a) 1-30 weight percent of a polar toughening agent compatibilized with a polyphenol, and (b) 70-99 weight percent of at least one thermoplastic polymer, the above state percentages being based on the total weight of components (a) and (b) only.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: October 6, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Edmund Arthur Flexman, Jr., Tatsuhiro Takahashi, Toshikazu Kobayashi
  • Low temperature toughened polyamides
    Patent number: 5670575
    Abstract: A toughened polyamide blend which exhibits improved toughness at exceptionally low temperatures can be prepared from:(A) 60 to 90 weight percent of a polyamide matrix resin; and(B) 10 to 40 weight percent of a rubber component including:(1) a functionalized rubber selected from ethylene/propylene copolymers and ethylene/propylene/diene terpolymers, and(2) an ethylene copolymer of the formula E/X/Y whereinE is a radical formed from ethylene and is 40 to 90 weight percent of the ethylene copolymer,X is an acrylate ester of an alcohol having 1 to 10 carbon atoms and is 10 to 80 weight percent of the ethylene copolymer, andY is selected from glycidyl methacrylate and glycidyl acrylate and is 0.5 to 10 weight percent of the ethylene copolymer.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: September 23, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edmund Arthur Flexman, Jr.
  • Process for making grafted polymeric material
    Patent number: 4026967
    Abstract: A continuous process is disclosed for manufacturing a grafted polymeric material of improved quality. The process is conducted in baffled tubular reactors which exhibit dispersed plug-flow character and which provide: rapid heating and cooling of reactants; short reaction time with uniform material residence time; and radial uniformity of temperature.
    Type: Grant
    Filed: June 25, 1976
    Date of Patent: May 31, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edmund Arthur Flexman, Jr., Frank Clyde Starr, Jr.