Patents by Inventor Charles J. Wright

Charles J. Wright 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).

  • Homopolymerization inhibition of photographic hardeners
    Patent number: 4171976
    Abstract: It is disclosed to inhibit homopolymerization of a bis(vinylsulfonyl)alkane hardener for a hydrophilic colloid useful in forming a layer of a photographic element by associating with the hardener a nitro-substituted aromatic compound.
    Type: Grant
    Filed: March 10, 1978
    Date of Patent: October 23, 1979
    Assignee: Eastman Kodak Company
    Inventors: Donald M. Burness, Charles J. Wright
  • 2-Haloethylsulfonyl photographic hardener compounds, compositions, articles and preparation processes
    Patent number: 3957882
    Abstract: Photographic elements are disclosed containing a hydrophilic colloid layer hardened with a compound having the structural formula:XCH.sub.2 CH.sub.2 SO.sub.2 Q(OQ).sub.m SO.sub.2 CH.sub.2 CH.sub.2 Xwherein X in each occurrence is halogen, Q is an aliphatic or phenyl substituted aliphatic divalent hydrocarbon radical having from 1 to 6 aliphatic carbon atoms and m is an integer of from 0 to 3 inclusive. The hardener also serves as an anti-foggant in photographic applications. Preferred are novel hardening and anti-fogging compounds having the structural formula: ##EQU1## in which X is halogen and R is hydrogen, phenyl or alkyl having from 1 to 6 carbon atoms.
    Type: Grant
    Filed: May 2, 1974
    Date of Patent: May 18, 1976
    Assignee: Eastman Kodak Company
    Inventors: Robert A. Silverman, Charles J. Wright