Patents by Inventor James I. Dunlop

James I. Dunlop 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).

  • Method and apparatus for photographic processing
    Patent number: 5387499
    Abstract: A method of processing an imagewise exposed photographic material in a processing solution which is unstable to the extent that it deteriorates without external reaction in which the photographic material is passed through a tank containing the solution characterized in that the solution is circulated through the tank at a rate of from 0.1 to 10 tank volumes per minute.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: February 7, 1995
    Assignee: Eastman Kodak Company
    Inventors: Anthony Earle, James I. Dunlop, Edward C. T. S. Glover, Peter D. Marsden, Roger Baretll
  • Photographic processing apparatus
    Patent number: 5351104
    Abstract: When using unstable processing solutions, high recirculation and/or replenishment rates may be required. However, this may result in non-uniform processing of photographic material in processing apparatus using such solutions. Described herein is apparatus in which agitation members (17) are provided in the processing tank. The members (17) are fixed to a wall (11) of the tank at a location (18). The member (17) has a free end (25) which is positioned to lie against emulsion surface (26) of material (20) being processed (or against inner wall surface (19) if no material (20) is present). As material (20) is moved along path (13).
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: September 27, 1994
    Assignee: Eastman Kodak Company
    Inventors: Edward C. T. S. Glover, Peter D. Marsden, James I. Dunlop