Structure of supporter for tie knot of knotting-free necktie
CA 2249774 C · Owner: Chen, Jiann-Jong · Inventors: Chen, Jiann-Jong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structure of supporter for a tie knot of a knotting-free necktie comprises an outer shell and a back wing connected to the outer shell. The outer shell as seen from its front view, being of a reverse triangular shape having two waist portions concave inward of the outer shell and, as seen from its top view, being of a bow shape. A protective beam resistant shoulders and protective tabs are provided at the rear side of the outer shell. A back wing is fitted onto the rear side of the outer shell and two side wing portions being somewhat resilient are lightly pressed against the two resistant shoulders. When mounting a loop cord two, ends of the loop cord are first threaded in the supporter …
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 October 7, 1998 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 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.