Patents by Inventor Normal L. Miller

Normal L. Miller 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).

  • Process for fixing photo-induced colored derivatives of spiropyrans and compositions therefor
    Patent number: 4346186
    Abstract: The present invention relates to processes for fixing photo-induced colored derivatives of spiropryans in solvent and solid solutions, and to compositions in which said photo-induced colored derivatives may be fixed, said processes comprising irradiating solvent or solid solutions comprising a spiropryan and an iodonium salt.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: August 24, 1982
    Assignee: Armstrong World Industries, Inc.
    Inventors: Thomas B. Garrett, John E. Herweh, Alan B. Magnusson, Normal L. Miller