Patents by Inventor Akemi S. Marshall

Akemi S. Marshall 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).

  • Cyclic phosphazene and salt antistatic composition
    Patent number: 5174923
    Abstract: The present invention provides an antistatic composition comprising a binder, a cyclic phosphazene, and a salt that complexes with the cyclic phosphazene. The cyclic phosphazene has the general formula ##STR1## wherein x is 3 or 4.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: December 29, 1992
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
  • Photographic silver halide element containing cyclic phosphazene and salt antistatic composition
    Patent number: 4971897
    Abstract: The present invention provides an antistatic composition comprising a binder, a cyclic phosphazene, and a salt that complexes with the cyclic phosphazene. The cyclic phosphazene has the general formula ##STR1## wherein x is 3 or 4.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: November 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
  • Photographic element containing polyphosphazene antistatic composition
    Patent number: 4948720
    Abstract: The present invention provides a photographic element that includes an antistatic composition comprising a polyphosphazene comprising repeating units of the formula: ##STR1## and a salt that complexes with the polyphosphazene. In the above formula, x, y, R.sub.1, R.sub.4, R.sub.5, W, X, Y, and Z are as defined herein.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: August 14, 1990
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Wayne T. Ferrar, James E. Kelly, Akemi S. Marshall