Patents by Inventor John D. Wehmeyer

John D. Wehmeyer 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: 5378764
    Abstract: A polyethylene composition comprising: (a) about 1 to about 30 weight percent of a branched polyethylene resin, wherein said resin is produced by the high pressure, free radical, polymerization process, and wherein said resin has a density from about 0.91 to about 0.93 grams per cubic centimeter, and wherein said resin has a melt index less than 6 grams per 10 minutes; and (b) about 99 to about 70 weight percent of a linear polyethylene resin, wherein said resin is produced by the low pressure, transition metal, polymerization process, and wherein said resin has a density from about 0.91 to about 0.94 grams per cubic centimeter, and wherein said resin has a melt index less than about 1 gram per 10 minutes, and wherein said resin has a shear ratio greater than about 50, and wherein said resin has a heterogeneity index greater than 6; wherein said weight percents are based on the weight of said polyethylene composition.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: January 3, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Elizabeth A. Benham, F. Wally Bailey, John D. Wehmeyer, Max P. McDaniel