Patents by Inventor Ghawamedin Bayan

Ghawamedin Bayan 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).

  • Article manufactured by an ion-beam-assisted-deposition process
    Patent number: 5494758
    Abstract: An article is provided manufactured by an ion-beam-assisted-deposition process. The article includes a polymeric element adapted to releasably engage a contact surface. The polymeric element is provided with a surface layer bonded to a surface of the polymeric element through an ion-beam-assisted-deposition process in order to reduce the tackiness of the polymeric material.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: February 27, 1996
    Assignee: Vernay Laboratories, Inc.
    Inventors: Ghawamedin Bayan, John G. Martin, Roger A. Cassell
  • Molded thermoplastic elastomer
    Patent number: 5247015
    Abstract: A molded thermoplastic elastomer having a compression set less than about forty percent, an oxygen transmission rate of less than 500 cc/m.sup.2 /day, a moisture vapor transmission rate of less than 2 gm/m.sup.2 /day, and a needle penetration force of less than 2000 grams.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: September 21, 1993
    Assignee: The West Company, Incorporated
    Inventor: Ghawamedin Bayan
  • Method of making SBR thermoplastic elastomers
    Patent number: 5093423
    Abstract: A method of making a thermoplastic elastomer composition produced by dynamic vulcanization of SBR as a dispersed phase of cross linked SBR, and a co-continuous matrix of SEBS and polypropylene. The dynamic vulcanization step takes place under conditions of shear and temperature to reach the decomposition point of crosslinked SBR, at which time the crosslinking reaction is quenched. Compositions of superior properties are achieved using this method.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: March 3, 1992
    Assignee: The West Company, Incorporated
    Inventors: Ghawamedin Bayan, Anthony S. Esposito
  • Modified halobutyl thermoplastic elastomer
    Patent number: 4978714
    Abstract: A thermoplastic elastomer composition is possible which has low coefficient friction, reduced stickiness and good structural integrity. A halobutyl rubber is cured by dynamic vulcanization in the presence of sufficient thermoplastic material to function as a continuous phase for the vulcanization. Thereafter, up to 25 parts based on 100 parts of the rubber of an uncured organopolysiloxane grafted EPDM polymer are admixed to form the final moldable product, resulting in a mixture which has good structural integrity and a smooth finished surface.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: December 18, 1990
    Assignee: The West Company Incorporated
    Inventors: Ghawamedin Bayan, Anthony S. Esposito
  • Molded pharmaceutical primary closure
    Patent number: 4975308
    Abstract: A molded pharmaceutical primary closure including a thermoplastic elastomer molded into the shape of a closure and having a compression set less than about forty percent, an oxygen transmission rate of less than 500 cc/m.sup.2 /day, a moisture vapor transmission rate of less than 2 gm/m.sup.2 /day, and a needle penetration force of less than 2000 grams.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: December 4, 1990
    Assignee: The West Company
    Inventors: Ghawamedin Bayan, Charles H. White, Richard H. Lusch, Malcolm A. Smook
  • SBR thermoplastic elastomer
    Patent number: 4927882
    Abstract: A thermoplastic elastomer composition produced by dynamic vulcanization of SBR has a dispersed phase of cross linked SBR, and a co-continuous matrix of SEBS and polypropylene.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: May 22, 1990
    Assignee: The West Company, Incorporated
    Inventor: Ghawamedin Bayan
  • Halobutyl thermoplastic elastomer
    Patent number: 4810752
    Abstract: A thermoplastic elastomer composition is disclosed, comprising a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent. The cure is effected in the presence of at least 20 parts of a mixture formed from 10 to 60 parts of a polyolefin and 1 to 90 parts of a thermoplastic elastomer. The parts based on 100 parts by weight of said rubber.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: March 7, 1989
    Assignee: The West Company
    Inventor: Ghawamedin Bayan
  • Polyester hairbrush bristle
    Patent number: 4515858
    Abstract: Monofilament brush bristle prepared from a blend of polyethylene terephthalate exhibits improved bend recovery characteristics.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: May 7, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ghawamedin Bayan