Patents by Inventor Peggy Sperl Willett

Peggy Sperl Willett 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).

  • Accelerators useful for energy polymerizable compositions
    Patent number: 6482868
    Abstract: Accelerators that can be useful for an energy polymerizable composition comprising a cationically curable material; energy polymerizable -compositions comprising at least one cationically curable material and an initiation system therefor, the initiation system comprising at least one organometallic complex salt and at least one accelerator; and a method for curing the compositions. The cured compositions can provide useful articles. The invention also provides compositions of matter comprising an organometallic complex salt and at least one compound selected from the Class 1 and Class 2 compounds disclosed herein.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: November 19, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne Scott Mahoney, Peggy Sperl Willett
  • Accelerators useful for energy polymerizable compositions
    Patent number: 6265459
    Abstract: Accelerators that can be useful for an energy polymerizable composition comprising a cationically curable material; energy polymerizable compositions comprising at least one cationically curable material and an initiation system therefor, the initiation system comprising at least one organometallic complex salt and at least one accelerator; and a method for curing the compositions. The cured compositions can provide useful articles. The invention also provides compositions of matter comprising an organometallic complex salt and at least one compound selected from the Class 1 and Class 2 compounds disclosed herein.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: July 24, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne Scott Mahoney, Peggy Sperl Willett