Device adjusting the sound pattern including the time of reverberation in a room
CA 1294893 C · Owner: Superfos A/S · Inventors: Keldmann, Erik; Rindel, Jens H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device adjusting the sound pattern including the time of reverberation in a room and comprising a plurality of sound-absorbing/reflecting members mountable in the corners of the room. Each sound-absorbing member is shaped in such a manner that it is preferably situated in positions adjacent a corner where the velocity of the air particles is particularly high. In this manner a good utilization of the sound-absorbing material is obtained. Furthermore a uniform frequency response is obtained and the possibili-, ties of adjusting the time of reverberation are improved. Fig. 5d should be published together with the abstract.
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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
- Granted January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- 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.