Data processing apparatus and method
CA 2273710 A1 · Owner: Fujitsu Services Limited · Inventors: Gardner, Paul Anton Richardson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data processing method evaluates expressions including, temporally-scoped operands, to produce temporally-scoped results. Each of the temporally-scoped operands and results includes a sequence of one or more value instances each value, instance including a data item a start time, and an end time, the start time and end time defining a time span in which the data item is valid. An expression involving a binary operator is evaluated by scanning each of the operands of the binary operator and generating a value instance in the result in, respect of each time span in which each operand has a constant value.
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 June 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2021.
- 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.