Built-in micro-speaker for wireless communication device
CA 2340845 A1 · 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 integral micro-speaker having bi-directional dual magnetic field loops is provided. In general, the integral micro-speaker is incorporated into a wireless, communication device such as a wireless telephone or a mobile telephone. The integral micro-speaker serves as a receiver and a speaker in a wireless telephone. The, integral micro-speaker may further incorporate a vibrator for producing an added, vibration function to the wireless telephone. In other words a receiver, a , speaker and, a vibrator may be combined together to form an integral component inside the wireless, telephone.
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 March 15, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2023.
- 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.