Dispensing apparatus for pasty substances
CA 2096583 C · Owner: Ro-Sa Plast S.P.A. · Inventors: Sandrin, Gianni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manually operated dispensing apparatus for dispensing pasty substances, in particular silicone includes a hollow, vessel, an air chamber formed by an elastically deformable wall a double check valve placing the air chamber in communication with the interior of the vessel, a sealing element through which the paste to be dispensed is introduced a front paste dispensing, spout, a manually operated dispensing actuation lever and a, plunger located inside the hollow vessel. The dispensing actuation lever has two segments disposed at an angle with respect to each other. The elastically deformable wall is pressed by actuating the lever so as to cause air in the air chamber to be injected under …
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 May 19, 1993 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2015.
- 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.