Method of manufacturing reflector
CA 2183926 C · Owner: Matsunaka, Shigeki · Inventors: Yamashita, Akira; Matsunaka, Shigeki; Kawada, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A copper film layer and a resin film are sequentially layered on a skin material the resin film is irradiated with a laser beam so as to be removed a mask is formed on the copper film layer by use of the residual of the resin film thereafter, an etching process is provided thereto so that a copper film layer pattern is formed on the reflective surface of the skin material.
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 August 22, 1996 and granted April 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2018.
- 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.