Method for transporting a cured organic or organosiloxane gel
CA 2041103 C · Owner: Niemi, Randolph Gary · Inventors: Strong, Michael Raymond; Niemi, Randolph Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is based on the discovery that a cured organic or organosiloxane gel will enter and flow through a conduit to a dispensing location as a coherent, homogeneous portion of material when 1) one end of the conduit is immersed in the gel, 2) a sufficient pressure differential is applied between the surface of the gel and the interior of the conduit to cause the gel to enter and at least partially fill a portion of the conduit and 3), sufficient pressure is then applied within the conduit to cause the gel to flow in the conduit to at least one dispensing location where the gel is withdrawn from the conduit as an integral, homogeneous stream of material.
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 April 24, 1991 and granted December 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2013.
- 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.