Communication method and system with encryption of information
CA 2005391 C · Owner: Etat Francais Represente Par Le Ministre Des Postes, Telecommunications Et De L'Espace (Centre National D'Etudes Des Telecommunications) · Inventors: Abiven, Jacques
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blow molding mold for making a hollow double-walled product includes male and female mold members movable toward and away from each other. The female mold member has a bottom and has first and second pairs of confronting peripheral wall segments, the wall segments of the second pair being pivotal relative to the bottom between open and closed positions. In one embodiment, the peripheral wall segments of the first pair are fixedly coupled to the bottom. In a different embodiment the wall segments of the first, pair are also pivotal between open and closed positions and, have expansion prevention walls which project outwardly from opposite sides thereof and which, when the wall segments of …
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 December 13, 1989 and granted May 24, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2011.
- 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.