Patents by Inventor Khalid A. Karim

Khalid A. Karim 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).

  • Polymer blends and easy-peel films prepared therefrom
    Patent number: 4414053
    Abstract: A polymer composition is disclosed and consists essentially of 100 parts by weight of an ethylene-alkyl acrylate copolymer and about 1 to 5 parts by weight of a polymer of a higher alkyl ester of acrylic or methacrylic acid. The polymer compositions have a lower heat seal strength than the ethylene-alkyl acrylate copolymer contained therein.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: November 8, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Polymer compositions
    Patent number: 4373066
    Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (d) a tackifying resin such as an aromatic hydrocarbon resin.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: February 8, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Multicomponent polymer compositions
    Patent number: 4367113
    Abstract: Compatible blends of polymers are disclosed which contain (a) a high density ethylene polymer or an isotactic propylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (d) a tackifying resin such as a terpene resin.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: January 4, 1983
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Coextrudable thermoplastic compositions and bonds and laminates therefrom
    Patent number: 4337297
    Abstract: Blends of thermoplastic polymers which may be coextruded to form bonding layers in film laminates contain (a) a copolymer of ethylene with a lower alkyl acrylate or methacrylate or vinyl acetate, (b) a chlorinated ethylene polymer and optionally (c) a tackifying resin.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Polymer compositions and laminates produced by bonding or coextrusion
    Patent number: 4337298
    Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (4) optionally a tackifying resin such as a glyceryl ester of a rosin acid.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: June 29, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, Pallavoor R. Lakshmanan, James H. Rea
  • Blends of ethylene-alkyl acrylate copolymers with certain polyesters
    Patent number: 4288572
    Abstract: A compatible blend of polymers is disclosed and consists essentially of 100 parts by weight of an ethylene-alkyl acrylate copolymer and about 0.2 to 3 parts by weight of either poly(ethylene adipate) or poly(trimethylene adipate). The polymer blends have a lower sealing temperature than the ethylene-alkyl acrylate copolymer contained therein.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 8, 1981
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Blends of low density ethylene polymers with certain polyesters
    Patent number: 4288573
    Abstract: A compatible blend of polymers is disclosed and consists essentially of 100 parts by weight of a low density ethylene polymer and about 0.2 to 3 parts by weight of either poly(ethylene adipate) or poly(trimethylene adipate). The polymer blends have a lower sealing temperature than the low density ethylene polymer contained therein.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 8, 1981
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Blends of ethylene-alkyl acrylate copolymers with rosin esters
    Patent number: 4276111
    Abstract: A polymer composition is disclosed and consists essentially of 100 parts by weight of an ethylene-alkyl acrylate copolymer and about 1 to 15 parts by weight of an ester formed from a rosin acid and ethylene glycol, propylene glycol, or glycerine. The polymer compositions have a lower heat sealing temperature than the ethylene-alkyl acrylate copolymer contained therein.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: June 30, 1981
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Ternary blends of low density ethylene polymers, ethylene-alkyl acrylate copolymers and amorphous isobutylene polymers
    Patent number: 4273893
    Abstract: Compatible ternary polymer blends are disclosed which consist essentially of a low density ethylene polymer, an ethylene-alkyl acrylate copolymer, and an amorphous isobutylene polymer. The compositions seal well at temperatures below those required for heat sealing ethylene polymers.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: June 16, 1981
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea
  • Process for molding acetylene end-capped polyimide oligomers
    Patent number: 4225550
    Abstract: Fine particles of acetylene end-capped polyimide oligomers are copression-molded at ambient temperature. The preformed moldings are cured without melting the resin by heating to an elevated temperature which is lower than the oligomer's melting point.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: September 30, 1980
    Assignee: Gulf Oil Corporation
    Inventors: Khalid A. Karim, James H. Rea