Method and apparatus to permit data transmission to traverse firewalls
CA 2761983 C · Owner: Eyeball Networks Inc. · Inventors: Khan, Md. Shahadatullah; Chung, Michael; Marwood, David Everett
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Currently data transmission over the Internet between two client computers where both client computers are protected by firewalls is problematic since firewalls block incoming packets. A method is provided for permitting packet based data transmission between a first computer protected by a first NAPT or NAT firewall and a second computer protected by a second NAPT or NAT firewall to traverse the first and the second firewalls. The method includes the first and second computers sending first and second data packets to a designated recipient computer. The designated recipient computer communicates the first external address from the first data packet to the second computer and also …
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 19, 2002 and granted November 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 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.