Ceiling tile transmitter and receiver system
CA 2314664 A1 · Owner: Frecska, Sandor A. · Inventors: Cronin, John E.; Frecska, Sandor A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ceiling tile transmitter and receiver system having at least one transmitter/receiver device located in a ceiling panel either during or after the ceiling, panel fabrication process. In one embodiment one or more pockets of variable size and, shape are created on a surface of the ceiling panel during or after the ceiling panel, manufacturing process and then a transmitter/receiver device such as an RF , antenna, is, rigidly fixed in the pocket. In another embodiment the transmitter/receiver , device is, embedded in the front side (lower surface) of the ceiling tile and a "scrim" covering is, placed over it to secure it in place. The transmitter/receiver device can also be embedded, …
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 July 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2022.
- 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.