System for compression and buffering of a stream with data extraction requirements
CA 2195595 C · Owner: Kanneganti, Ramarao · Inventors: Kanneganti, Ramarao; Sudarshan, Sundararajarao; Jagadish, Hosagrahar Visvesvaraya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a data base system wherein incoming records are buffered according to destination in the disk or non-volatile memory. The data is compressed and transferred to disk when sufficient data has been accumulated for a particular disk destination. The invention describes techniques for compressing the compression dictionary as well as the data stream.
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 January 21, 1997 and granted November 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.