Transformer unit and coil case and coil bobbin for use therefor
CA 2114564 C · Owner: Nonomura, Yoshiharu · Inventors: Matsui, Yoshihiro; Masuda, Kentaro; Ichikawa, Yuichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For use with a transformer unit comprising a main housing accommodating a transformer, a coil case is provided which encloses a high-voltage coil and the magnetic core section around which said coil is mounted. The interior space of the coil case is filled with insulating compound.
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 January 31, 1994 and granted May 26, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2016.
- 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.