Patents by Inventor John M. Birmingham

John M. Birmingham 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).

  • 2-alkyl-4-(2,6-dialkylphenyl) indenes
    Patent number: 6291699
    Abstract: 2-alkyl-4-(2,6-dialkylphenyl) indenes, methods for the synthesis thereof, methods for converting such indenes to bridged metallocene ligands, methods for converting such ligands to bridged metallocenes and olefin polymerization processes in which such metallocenes are used as a catalyst or as a component of a catalyst system are described.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: September 18, 2001
    Assignee: Boulder Scientific Company
    Inventors: John M. Birmingham, Sandra Russo-Rodriguez
  • Dicyclopentadiene cracking process
    Patent number: 5877366
    Abstract: A process and a system for cracking dicyclopentadiene are disclosed pursuant to the process preheated dicyclopentadiene is introduced into a heated transfer fluid sufficiently below the transfer fluid surface to accomplish substantially complete conversion of said dicyclopentadiene to monomeric cyclopentadiene vapor.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: March 2, 1999
    Assignee: Boulder Scientific Company
    Inventor: John M. Birmingham
  • Stable sodium tetraphenylborate solutions
    Patent number: 5069821
    Abstract: Stable alkaline aqueous solutions of sodium tetraphenylborate.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: December 3, 1991
    Assignee: Boulder Scientific Company
    Inventors: John M. Birmingham, Jeffrey M. Sullivan