Method of managing software by transmitted data on network
CA 2194523 C · Owner: Tobita, Masahiro · Inventors: Tobita, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A user buys software having a product code stored in a CD-ROM. A use-charge of the software is paid. The use-charge is determined by the user in correspondence with a use frequency of the software before the software is used. When the usecharge of the software is paid, the key code management table in a host computer is updated. The user's computer is connected with the host computer on a network, then the user gets a usable time and a key code of the software. Thus the user can use the, software within the usable time corresponding with the usecharge. Therefore, the use-charge and a public network fee can be collected reliably.
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 7, 1997 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 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.