Patents by Inventor Vincent James Flow

Vincent James Flow 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: 5736303
    Abstract: The invention relates to a photographic element comprising at least one layer comprising at least one substituted hydroquinone and adjacent said at least one layer comprising substituted hydroquinone, at least one layer comprising coupler Magenta-1 ##STR1## wherein R.sub.a and R.sub.b independently represent H or a substituent; R.sub.c is a substituent; X is hydrogen or a coupling-off group; and Z.sub.a, Z.sub.b, and Z.sub.c are independently a substituted methine group, .dbd.N--, .dbd.C--, or --NH--, provided that one of either the Z.sub.a --Z.sub.b bond or the Z.sub.b --Z.sub.c bond is a double bond and the other is a single bond, and when the Z.sub.b --Z.sub.c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z.sub.a, Z.sub.b, and Z.sub.c represents a methine group connected to the group R.sub.b, wherein the ratio of gelatin to organic component in said layer comprising magenta 1 is greater than 1.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: April 7, 1998
    Assignee: Eastman Kodak Company
    Inventors: Gary John McSweeney, Alphonse Dominic Camp, Vincent James Flow