Patents by Inventor Calvin K. Schram

Calvin K. Schram 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).

  • Patent number: 8247065
    Abstract: Provided are blends of linear low density polyethylene copolymers with very low density, low density, medium density, high density, and differentiated polyethylenes and other polymers. The invention also includes articles produced from the linear low density polyethylene and polyethylene blends described herein.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: August 21, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
  • Publication number: 20080038533
    Abstract: Provided are blends of linear low density polyethylene copolymers with very low density, low density, medium density, high density, and differentiated polyethylenes and other polymers. The invention also includes articles produced from the linear low density polyethylene and polyethylene blends described herein.
    Type: Application
    Filed: April 24, 2007
    Publication date: February 14, 2008
    Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
  • Patent number: 4749757
    Abstract: A suspending agent system, a polymerizable reaction mixture, and a polymerization reaction process for producing high bulk density resin on a consistent basis by incorporating in the reaction mixture prior to initiation of the reaction about 1-250 parts per million by weight of polymerization inhibitor and also including about 0.001-0.1 parts by weight based on the weight of VCM of a highly hydrolyzed PVA. Preferred PVA's have a 4 weight percent aqueous solution viscosity of 30-100 centipoise and an effective polymerization inhibitor is diethylhydroxylamine. Bulk densities may be increased from about 3-10% depending upon the size of the reaction and the particular ingredients chosen.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: June 7, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Calvin K. Schram, Joseph Serratore, James R. Wallace