Patents by Inventor Frank T. Geris

Frank T. Geris 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 of producing a gravure printing surface utilizing a continuous and screened negative
    Patent number: 4012257
    Abstract: A method of producing gravure printing surfaces is disclosed. The method utilizes a separately produced screened negative made on orthochromatic film and a continuous tone negative. Both negatives are superimposed to produce a positive with variable size dots and variable tone densities which are then utilized to expose the carbon tissue resist used to etch the printing surface. Alternatively, the negatives are utilized to produce corresponding positives each of which is used to expose the carbon tissue.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: March 15, 1977
    Inventor: Frank T. Geris