Printed-wiring board
CA 1303240 C · Owner: Yazawa, Yoshiaki · Inventors: Yazawa, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a printed-wiring board produced by arranging a plurality of wiring circuit patterns on a printed-wiring board by screen printing and cutting out product regions corresponding to the wiring circuit patterns by punching them along the circumferences of the product regions. The printed-wiring board according to the present invention is comprised of deviation detecting patterns for determining whether or not the condition of deviation of the printed pattern is within an allowable limit. The deviation detecting patterns are printed at the time of the screen printing of the wiring circuit patterns in the vicinity of the position of the cut plane of the board …
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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.