Patents by Inventor Friedrich J. Weck

Friedrich J. Weck 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).

  • Newsprint coupon separator
    Patent number: 4162339
    Abstract: A weakening composition printed onto newsprint in a predetermined pattern causes the newsprint to weaken within a short period of time along the lines of the pattern so that the newsprint tears preferentially along the outline of the pattern.
    Type: Grant
    Filed: February 7, 1978
    Date of Patent: July 24, 1979
    Inventors: Friedrich J. Weck, James Hunkins, Samuel J. Rinsler
  • Newsprint coupon separator
    Patent number: 4073982
    Abstract: A weakening composition printed onto newsprint in a predetermined pattern causes the newsprint to weaken within a short period of time along the lines of the pattern so that the newsprint tears preferentially along the outline of the pattern.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: February 14, 1978
    Inventors: Friedrich J. Weck, James Hunkins, Samuel J. Rinsler