Date value reduction system
CA 2212883 C · Owner: Colizza, Tina · Inventors: Colizza, Vincent; Colizza, Tina
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A date value reduction system resolves the "Year 2000" problem in data processing. The input and output problems are resolved with the use of a "date translation object" (DTO) which translates an input date into a processing date, (a reduced date value for processing purposes). This DTO similarly translates the, processing date into an output date which is the actual date. The DTO may be embodied as a short sub-routine that can handle all possible date translation requests, whether adding the date value or subtracting it. A call to the DTO is made, at any time the processing software receives an input or outputs date related data. This call is inserted at the input and output command …
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 August 26, 1997 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 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
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.