Patents by Inventor John V. Andersen

John V. Andersen 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).

  • Apparatus for dispensing a fluent substance from a flexible container disposed between a pair of opposed plates
    Patent number: 4271985
    Abstract: Apparatus for dispensing a fluent substance from a flexible container which consists of two opposed plates which are pivotally attached to a frame and which receive the container between them. The plates are movable with the aid of a suitable linkage by a controlled amount towards one another to compress the container and so cause a dose of the substance to be dispensed.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: June 9, 1981
    Inventor: John V. Andersen
  • Donor material for carbonless copying and coating composition for the same
    Patent number: 4262935
    Abstract: A donor material for carbonless copying by contact with an acceptor material under applied pressure includes a sheet of paper or the like, and a coating on one face of the sheet. The coating consists essentially of a dye precursor, a wax solid at 20.degree. C. and capable of dissolving the precursor, and a liquid activator soluble in the molten wax, but at most sparingly soluble in the solid wax and incapable of dissolving the dye precursor, the wax and activator being chemically inert to the dye precursor.
    Type: Grant
    Filed: October 18, 1978
    Date of Patent: April 21, 1981
    Assignees: Feldmuhle Aktiengesellschaft, Aktieselskabet For Kontor Kemi
    Inventors: John V. Andersen, Guido Dessauer