Patents by Inventor George Fredric Medford

George Fredric Medford 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).

  • Method for making radiation curable silicon containing polyacrylate hardcoat
    Patent number: 5712325
    Abstract: A method is provided for making a radiation curable silicon containing polyacrylate hardcoat composition based on the use of a dispersion of colloidal silica in a C(3-5) branched aliphatic alcohol such as isopropyl alcohol. A reduction in the use of excess amounts of solvent along with avoiding gelation is achieved while allowing treatment of the colloidal silica dispersion with a alkoxysilylacrylate, followed by the employment of polyfunctional reactive acrylic monomer and stripping of the mixture.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: January 27, 1998
    Assignee: General Electric Company
    Inventors: Larry Neil Lewis, Gautam Ambalal Patel, Gregory Ronald Gillette, George Fredric Medford
  • Radiation curable hardcoat compositions
    Patent number: 5708048
    Abstract: A radiation (UV or E-beam) curable hardcoat composition formed of a mixture of colloidal silica and hydrolyzed silica acrylate, an acrylic monomer and a photoinitiator is disclosed. Additives including a hindered amine light stabilizer, a fluoroacrylate and alkyl acrylate are employed to improve cure, clarity and hardness. A diphenyl (2,4,6-trimethyl(benzoyl) phosphine oxide UV initiator causes effective out of focus curing.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: January 13, 1998
    Assignee: General Electric Company
    Inventors: George Fredric Medford, Gautam Patel