Planar transformer winding
CA 2315894 A1 · Owner: Taurand, Christophe · Inventors: Taurand, Christophe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a planar transformer winding comprising primary (20a 20b) and secondary (22a-22f) coils with wire turns produced in the form of strip conductors formed on the surfaces of an insulating base and electrically connected with one another by means of conducting holes bored in the insulating base. The primary and secondary winding portions (respectively 20a 22a, 22c, 22e; respectively 20 b, 22b, 22d 22f) borne by one common surface of the insulating base are joined together by winding along two distinct overlapping zones, spiral in shape one of the zones joining side by side turns or portions of turns (20a or 20b) of the primary coil and the other zone joining together the …
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
- Filed December 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2020.
- 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.