Patents by Inventor Khalid Karim

Khalid 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).

  • 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