Patents by Inventor Andrew Popoff

Andrew Popoff 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: 4359279
    Abstract: Apparatus for safely transporting a sheet of photographic material through a development or other processing station comprises means for concurrently circulating processing liquid in the form of a plurality of streams both downward onto the sheet and upward from an underlying plate, the latter streams supporting the sheet and providing for the formation of a liquid layer between the plate and the sheet which facilitates the unrestricted passage of the sheet along the processing path. The downwardly projected streams are angled in the direction of sheet travel to provide further impetus to the movement of the sheet.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: November 16, 1982
    Assignee: Keuffel & Esser Company
    Inventor: Andrew Popoff
  • Patent number: 4350555
    Abstract: A press apparatus comprising a pair of parallel rollers sequentially joins a plurality of pre-imaged adhesive layers in precise registration to form a composite color proof. Detent and coupling means maintain the respective rollers and mounted image sheets in predetermined registration until the rollers are brought together and rotated by separate drive means to effect lamination of the complementary imaged layers.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: September 21, 1982
    Assignee: Keuffel & Esser Company
    Inventor: Andrew Popoff