Expired Canadian patentCanada
Apparatus and method for making an ear warmer and an ear warmer frame
CA 2474536 C · Owner: Werner, Justin Saul · Inventors: Werner, Justin Saul; Tipp, Alan; Isom, Matthew
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an ear warmer device. More specifically the , present invention relates to apparatus and methods for making ear warmers (10) and ear warmer frames (200).
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 28, 2003 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 28, 2003
GrantedJanuary 8, 2013
Term endedJanuary 28, 2023
Patent numberCA 2474536 C
Classification (IPC)A61F11/14
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.