Comb
CA 2102444 C · Owner: Chen, Hong-Yuan · Inventors: Chen, Hong-Yuan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved comb comprises a spine and a plurality of line members. The spine further consists of a left member and a right member fixing to each other. The pluratity of line members are connected between the left member and the right member with an indentation being located at the intermediate portion of each line member. Each line member is then bent at the indentation to form an approximate elliptical loop and acts as a tooth of the comb for tidying the hair. -1-
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 November 4, 1993 and granted January 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2015.
- 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.