Ubiquitous visited links
CA 2402809 A1 · Owner: Ibm Canada Limited-Ibm Canada Limitee · Inventors: Lewis, Scott M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Where a user logs on to a web page server the server can maintain a history , of links to web pages hosted by the server to indicate which links are visited by the user. In, consequence, a user may log on to the web page server from any web pageenabled, device and the server will be able to differentiate for the user links the user has visited from, links that have yet to be visited.
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 September 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2024.
- 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.