Patents by Inventor Missfeldt Michael

Missfeldt Michael 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: 6280921
    Abstract: A color photographic silver halide material which contains at least one light-sensitive silver halide emulsion, and a cyanine dye of formula (I) wherein R1, R2, R3, R4, R5 and R6, independently of each other, each represent a substituent, with the proviso that at least one of the radicals R1, R2 and R3 represents a benzthienyl substituent, X represents O, S, Se, NR7, CH═CH or C(CH3)2, wherein R7 represents an alkyl radical which is optionally substituted, S1 and S2 independently of each other, represent alkyl, sulphoalkyl, carboxyalkyl, —(CH2)1—SO2—Y—SO2-alkyl, —(CH2)1—SO2—Y—CO-alkyl, —(CH2)1—CO—Y—SO2-alkyl, —(CH2)1—CO—Y—O-alkyl, —(CH2)1—NH—SO3⊖, —(CH2)1—N(alkyl)—SO3⊖ or —(CH2)1—N(Aryl)—SO3⊖ , with the proviso that l=1 to 6 and Y is NH or N—, n is 0, 1, 2 or 3, L1, L2 and L3 independently represent a
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: August 28, 2001
    Assignee: AGFA-Gevaert
    Inventors: Missfeldt Michael, Herrmann Stefan