Patents Represented by Attorney Dale L. Lovercheck

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  • Cycloolefin polymerization catalyst composition
    Patent number: 4568660
    Abstract: A polymerization catalyst composition including ##STR1## wherein R is an alkyl group having 3 to 20 carbon atoms; m is 4 or 6 and n is 0 or 1. Preferably the composition also includes, ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen, an alkyl or alkoxy group of form 1 to 5 carbons. Preferably r is 1; m is 4 and R is nonyl and the molar ratio of WCl.sub.m O.sub.n to ##STR3## is from about 1:1 to about 1:3.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: February 4, 1986
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Broom
    Patent number: D283176
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: April 1, 1986
    Assignee: Tantara, Inc.
    Inventor: Joseph Lapin