Method and subscriber unit for performing an access procedure
CA 2676866 C · Owner: Ozluturk, Fatih M. · Inventors: Ozluturk, Fatih M.; Lomp, Gary R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication method for use with a code division multiple access (CDMA) subscriber unit is disclosed. The method includes generating a first code wherein the first code has a first length and generating a second code wherein the second code has a second length greater than the first length and a period which is aligned with the length of the first code. A first radio frequency signal is transmitted from an antenna of the CDMA subscriber unit wherein the first radio frequency signal carries the first code at a first power level, at least a portion of the second code, and data. In an absence of an acknowledgement signal received by the CDMA subscriber unit a power level of the , …
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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
- Filed June 23, 1997 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2019.
- 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
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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.