Adjustable earphone with a microphone
CA 2262371 C · Owner: Cotron Corporation · Inventors: Yang, Bill
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable earphone with a microphone has a hook a speaker, and a, microphone, in which the hook is used for comfortably mounting the earphone on a, user's ear. The speaker is mounted in a speaker chamber that connects to the hook by, an outrigger wherein the speaker can be firmly fixed on the user's exterior acoustic, meatus. The microphone is mounted in a microphone chamber that connects to the hook by a boom, and the microphone chamber can be fixed near the user's mouth. A, speaker signal-wire used for transmitting the signal extends from the speaker chamber, passes through the hook, and then couples to the audio signal manager. A microphone, signal-wire used for transmitting …
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 22, 1999 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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.
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.