Automatic download device
CA 2061781 C · Owner: Tsumura, Mihoji · Inventors: Taniguchi, Shinnosuke; Tsumura, Mihoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention enables the automatic addition of new data to a database by means of a communications line. Communication is periodically established with a center equipped with a memory device and on occasions when it is found that there is new data in the center memory device space is secured in, the terminal memory device for storage of the new data. At the same time the new data is read out of the center memory device and stored in the terminal memory device. In order to secure the requisite data storage space data which is, only infrequently accessed may be deleted from the terminal memory.
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 February 25, 1992 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2014.
- 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.