Poster and its making method
CA 1238780 A · Owner: Kabushiki Gaisha Waizen · Inventors: Yoshida, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Disclosed is a poster comprising a white base sheet and a plurality of parallel black stripes of so various widths that they are in conformity with the values in the light or dark tones in an original picture, thereby mixing black and white lines so as to cause a desired halftone picture to appear. The parallel stripes of various widths are formed by means of a computer-assisted cutter. Its cutting tool is moved in an adhesive black film in response to an electric signal representing the values in the light and dark tones in the stripe pattern of the original picture, thus cutting stripes of various widths in the black film. Then, the black stripes of various …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.