Patents by Inventor Wallace Edwards

Wallace Edwards 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).

  • Printed product having adjacent or closely spaced multicolour halftone dots
    Patent number: 5205211
    Abstract: A method of printing with at least two printing plates, or their equivalent, characterized in that associated halftone dots belonging to two distinct pluralities, each of which is printed with one of said two printing plates, and each of which are interleaved with the other and printed in a color different from the other, are separated by a gap when printed in perfect register.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: April 27, 1993
    Inventor: Wallace Edwards
  • Printing method and printed product
    Patent number: 5074206
    Abstract: A method of printing with at least two printing plates, or their equivalent, characterized in that associated halftone dots belonging to two distinct pluralities, each of which is printed with one of said two printing plates, and each of which are interleaved with the other and printed in a color different from the other, are separated by a gap when printed in perfect register.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: December 24, 1991
    Inventor: Wallace Edwards
  • Printing method and printed product
    Patent number: 4998962
    Abstract: A method of printing with at least two printing plates, or their equivalent, characterized in that associated halftone dots belonging to two distinct pluralities, each of which is printed with one of said two printing plates, and each of which are interleaved with the other and printed in a color different from the other, are separated by a gap when printed in perfect register.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: March 12, 1991
    Inventor: Wallace Edwards
  • Color reproduction process
    Patent number: 4554241
    Abstract: A method of printing on a sheet member a realistic image of an original, uses two different superimposed impressions with two different coloring media. A first printing plate is created by interposing at least two filters between the original and the film or photoconductive surface, and a second printing plate is created by interposing at least one filter between the original and the film or photoconductive surface. Then, the two printing plates are used to print the different impressions with two different coloring media.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: November 19, 1985
    Inventor: Wallace Edwards