Patents by Inventor Peter C. Leung

Peter C. Leung 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).

  • Nonlineaphores and polymers incorporating such nonlineaphores
    Patent number: 5256784
    Abstract: Nonlinear-optic (NLO) compositions containing functionalized merocyanine dyes, such that the molecules, comprising the NLO-active compositions have a functional group at each end of the molecule and each functional group differing in reactivity, thus permitting stepwise reaction of each functional group, and NLO-active molecules prepared from hemioxonol dyes derviatived with (meth)acrylate or (meth)acrylamide groups, and their uses in devices such as second harmonic generators or polymer integrated optics.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: October 26, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Cecil V. Francis, Elisa M. Cross, Roberta E. Harelstad, Paul F. Korkowski, Peter C. Leung, David W. Macomber, John E. Trend
  • Second harmonic generation with 5-chloro-2-nitroaniline
    Patent number: 4756598
    Abstract: Devices for and method of generating coherent second harmonic light radiation. The devices comprise a laser source of coherent light radiation at a fixed fundamental frequency, crystalline 5-chloro-2-nitroaniline that crystallizes in a non-centrosymmetric configuration, means for directing the output radiation of the laser onto the 5-chloro-2-nitroanilane, and output means for utilizing the second harmonic frequency.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: July 12, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Diana J. Gerbi, Peter C. Leung, John J. Stofko, Jr.