Head set
CA 2095124 C · Owner: Yashima Electric Co. Ltd. · Inventors: Sakurai, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a head set capable of improving a sense of comfort when being put on realizing, an easier attaching and detaching operations and minimizing, a feeling of being tired even when used for a long time. The head set comprises an auricle insertion type, earphone (1) including an auricle insertion section (4), covered by a cover (3) a casing (5) incorporating an acous-, tic converter and a cord (6) a supporting member (7) of a, rod shape attached on a body (2) of the auricle insertion type earphone, and a microphone (8) arranged in a vicinity of a tip end of the supporting member (7). The microphone (8) is positioned adjacent to a person's mouth or adjacent to an …
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 August 27, 1992 and granted September 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2014.
- 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.