Expired Canadian patentCanada
Earphone-microphone adapter
CA 2262272 C · Owner: Yang, Bill · Inventors: Yang, Bill
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adapter for connecting an earphone-microphone set to a mobile telephone such that a muting function is added to the system. Moreover an older , earphone-, microphone set can also be connected to a mobile telephone via this adapter.
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 February 19, 1999 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 19, 1999
GrantedJuly 9, 2002
Term endedFebruary 19, 2019
Patent numberCA 2262272 C
Classification (IPC)H01R13/70 +2 more
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.