Cable television radio frequency return method
CA 2078561 A1 · Owner: Naddor, David Jonathan · Inventors: Naddor, David Jonathan; Beyers, Robert John, Ii; Mcmullan, Jay Cauthern, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling the allocation of a population of remote units (120) among a plurality of groups of remote units (120) is provided. Each remote unit (120) has a digital identifier respectively associated therewith. A maximum and a minimum average number of remote units (120) per group is fixed. The remote units (120) are assigned to the groups of remote units (120) in accordance with the respective digital identifiers. The average number of remote units (120) per group is then determined as remote units (120) are assigned thereto. Next, the average number of remote units (120) per group is compared to the fixed maximum number of remote units (120) per group. The above steps are …
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 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2013.
- 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.