Patents by Inventor Hamlin H. Barnes

Hamlin H. Barnes 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).

  • Cross-coupling synthesis of alkyl (dialkylphenyl) indenes
    Patent number: 7205427
    Abstract: A cross-coupling synthesis of 2-alkyl-4-(2,6-dialkylphenyl)indenes is described. A 2-alkylidene is treated with a dialkylboronic acid in the presence of a catalyst. A feature of the invention is the use of a cross-coupling catalyst comprising palladium dichloride (1,5-cyclooctadiene) as a cross-coupling catalyst.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 17, 2007
    Assignee: Boulder Scientific Company
    Inventor: Hamlin H. Barnes
  • Cross-coupling synthesis of alkyl (dialkylphenyl) indenes
    Publication number: 20040267072
    Abstract: A cross-coupling synthesis of 2-alkyl-4-(2,6-dialkylphenyl)indenes is described. A 2-alkylidene is treated with a dialkylboronic acid in the presence of a catalyst. A feature of the invention is the use of a cross-coupling catalyst comprising palladium dichloride (1,5-cyclooctadiene) as a cross-coupling catalyst.
    Type: Application
    Filed: June 4, 2002
    Publication date: December 30, 2004
    Inventor: Hamlin H. Barnes
  • Synthesis of 2-halobenzyl alkanoic acid
    Patent number: 6586625
    Abstract: A method for synthesizing compounds of Formula I in which R is alkyl or aryl and X is any halogen is described.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: July 1, 2003
    Assignee: Boulder Scientific Company
    Inventors: Hamlin H. Barnes, Fredric R. Askham
  • Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst ligands
    Patent number: 6465700
    Abstract: Novel 2-substituted 7-haloindenes and methods for synthesizing such indenes are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: October 15, 2002
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Hamlin H. Barnes
  • 2-substituted 7-haloindenes and methods for synthesizing
    Patent number: 6075171
    Abstract: Novel 2-substituted 7-haloindenes and methods for synthesizing such indents are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: June 13, 2000
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Hamlin H. Barnes
  • Coupling reactions of 2-substituted, 7-haloindenes with aryl substituents to produce metallocene catalyst intermediates
    Patent number: 5789634
    Abstract: Novel 2-substituted 7-haloindenes and methods for synthesizing such indenes are described. The 2-substituted 7-haloindenes may be coupled with any aryl group to produce a metallocene catalyst intermediate.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: August 4, 1998
    Assignee: Boulder Scientific Company
    Inventors: Jeffrey M. Sullivan, Hamlin H. Barnes