Printed circuit board carrying protective mask having improved adhesion
CA 1054259 A · Owner: Canadian General Electric Company Limited · Inventors: Galko, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved printed circuit board is provided which carries a protective solder mask and which can be, wave-soldered without damaging the solder mask. A process is described for making the improved printed circuit board. The board has the distinguishing feature that the portions of the copper conductive paths which are covered by the solder mask are free of tinned coating.
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 May 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 1996.
- 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.