Character set and programming language extension for enlarging the capacity of a date code
CA 2289226 A1 · Owner: Beam, William N. · Inventors: Beam, William N.
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 new date code with a two digit year code that is compatible with standard data codes and that may represent dates well , beyond the year 1999. The invention defines a set of extended symbols (354) that may be used as first or second digits in the new two digit year code in the new date code. In addition, the invention provides an interpretation of the extended symbols which allows the new year codes to be added subtracted, or otherwise manipulated and still provide a two symbol representation of years well beyond 1999. In addition, the extended symbols may be used in nonyear code mathematical operations to provide an extended range of results that …
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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 April 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2020.
- 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.