Patents by Inventor Tran Van Thien

Tran Van Thien 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).

  • Patent number: 6605416
    Abstract: Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with near-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: August 12, 2003
    Assignee: Imation Corp.
    Inventors: Stanley C. Busman, Richard J. Ellis, Jeanne E. Haubrich, William D. Ramsden, Tran Van Thien, Gregory D. Cuny
  • Patent number: 5763134
    Abstract: Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with near-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: June 9, 1998
    Assignee: Imation Corp
    Inventors: Stanley C. Busman, Richard J. Ellis, Jeanne E. Haubrich, William D. Ramsden, Tran Van Thien, Gregory D. Cuny
  • Patent number: 5380635
    Abstract: Dihydroperimidine squarylium dyes have been found to be particularly effective when used in acutance and antihalation systems for photothermographic and photographic articles.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: January 10, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Gomez, Lori S. Harring, Randall H. Helland, William D. Ramsden, Tran Van Thien
  • Patent number: 4981775
    Abstract: A photothermographic element comprising a support bearing an image forming system comprising:(a) a photosensitive silver halide(b) an organic silver compound(c) a polymer binder and(d) a reducing agent for the organic silver compound, characterized in that the reducing agent comprises a redox-dye-releasing compound of the general formula: ##STR1## in which: R represents an organic group which may be oxidatively cleaved to a thermally immobile form,A represents a bond or a divalent linking group having a chain consisting of up to 12 atoms, which is linked to the carbonyl group via a carbon atom or an oxygen atom, andD represents the chromophore of a thermally mobile dye.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: January 1, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven Swain, Tran Van Thien, Stephen S. C. Poon
  • Patent number: RE38251
    Abstract: Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with new-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: September 16, 2003
    Assignee: Imation Corp.
    Inventors: Stanley C. Busman, Richard J. Ellis, Jeanne E. Haubrich, William D. Ramsden, Tran Van Thien, Gregory D. Cuny