Patents by Inventor Usama E. Younes

Usama E. Younes 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).

  • Composition comprising a matrix resin and an alternating copolymer of brominated styrene and N-brominated phenyl maleimide flame retarding additive
    Patent number: 4607081
    Abstract: A flame retarding additive comprising an alternating copolymer of a brominated styrene and N-brominated phenylmaleimide, is blended with a matrix resin to produce molding compositions which when molded exhibit improved flame retarding characteristics. The flame retarding additives of this invention also exhibit non-blooming characteristics.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: August 19, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Flame-retardant molded composition incorporating a poly[N-(bromophenyl)maleimide-co-styrene-co-maleic anhydride] copolymer
    Patent number: 4604422
    Abstract: A moldable composition which comprises a novel random N-(brominated or chlorinated phenyl) maleimide-containing copolymer, a thermoplastic resin, preferably, polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: August 5, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Char-forming polymer, moldable composition and method
    Patent number: 4571418
    Abstract: The char residue formation of molded compositions, upon combustion, is improved by incorporating into the moldable composition a char-forming polymer containing recurring units of at least one monomer capable of undergoing tautomerization, at least one monomer capable of undergoing a nucleophilic substitution reaction by said monomer capable of undergoing tautomerization and, optionally, at least one additional copolymerizable monomer.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: February 18, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Alternating copolymer of brominated styrene and N-brominated phenyl maleimide
    Patent number: 4508883
    Abstract: A flame retarding additive comprising an alternating copolymer of a brominated styrene and N-brominated phenylmaleimide, is blended with a matrix resin to produce molding compositions which when molded exhibit improved flame retarding characteristics. The flame retarding additives of this invention also exhibit non-blooming characteristics.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: April 2, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Fire retardant copolymer from bis(hydrocarbyl)vinyl phosphonate
    Patent number: 4444969
    Abstract: Copolymers of a mono vinyl-substituted aryl hydrocarbon monomer, an imide derivative of an unsaturated cyclic anhydride and a bis(hydrocarbyl) vinylphosphonate are useful as fire retardant additives.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: April 24, 1984
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Fire retardant thermoplastic molding compositions
    Patent number: 4379877
    Abstract: A thermoplastic molding composition which comprises a homogeneous mixture of two thermoplastic copolymers is disclosed. In one of its more specific aspects, this invention pertains to a homogeneous mixture of a copolymer of a monovinyl aromatic monomer and an alpha, beta-unsaturated cyclic anhydride and a phosphorus-containing alternating copolymer.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: April 12, 1983
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Thermoplastic molding composition
    Patent number: 4371672
    Abstract: A thermoplastic molding composition which comprises a mixture of two thermoplastic polymers which are at least partially miscible in one another is disclosed. In one embodiment, this invention pertains to a homogeneous mixture of a polyphenylene oxide and a phosphorus-containing alternating substantially linear copolymer. In another embodiment, this invention pertains to a mixture of polyphenylene oxide and a phosphorus-containing alternating cross-linked copolymer which mixture is at least partially miscible.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: February 1, 1983
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Phosphorus-containing alternating copolymers
    Patent number: 4369260
    Abstract: Copolymers having a backbone of alternating polymer blocks and phosphorus units and their method of production are disclosed. These alternating copolymers exhibit excellent fire retardancy.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: January 18, 1983
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes