Patents by Inventor Roger Merrill

Roger Merrill 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).

  • Radiation resistant polypropylene useful in medical applications
    Publication number: 20070123620
    Abstract: Blends useful as an additive in polyolefin polymers for minimizing the effects of radiation on the physical properties of polymers, which comprises a hindered amine light stabilizer and at least one material selected from the group consisting of: i) amine oxides and ii) hydroxylamines. Various articles of manufacture may be produced using a composition or blend according to the invention, and the physical properties of such articles are less effected by electromagnetic radiation than like-kind compositions of the prior art.
    Type: Application
    Filed: December 2, 2004
    Publication date: May 31, 2007
    Applicant: Huntsman Polymers Corporation
    Inventors: Kasinath Nayak, Gerald Cummings, Roger Merrill
  • Radiation resistant polypropylene resins
    Patent number: 5376716
    Abstract: A radiation resistant resin suitable for the manufacture of, for example, disposable medical supplies comprises a semicrystalline polypropylene or propylene-ethylene and from 1500 to 5000 ppm triallyl trimellitate. The resin exhibits substantially no increase in melt flow rate after irradiation to a dosage of up to 5 Mrads, and may contain up to about 5% by weight of a polybutylene and/or up to about 3000 ppm of a sorbital based clarifying agent.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: December 27, 1994
    Assignee: Rexene Products Company
    Inventors: Kasinath Nayak, George C. Allen, Roger Merrill