Method and apparatus for refillable stick dispenser
CA 2269124 C · Owner: Reinfelder, Gerd-Ruediger · Inventors: Reinfelder, Gerd-Ruediger; Tranelis, Klaus; Gierenz, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For an adhesive stick (14) comprising, - a tube (15) optionally closable by a cap and having an opening at at least one end and, - a plunger (19) designed for axial displacement over the length of the holder (15) along a screwthreaded spindle (17) to apply the spreadable product mass (23) acommodated in the holder (15) the invention seeks to enable the stick to be refilled with product mass. This is achieved by a refill cartridge (1e) comprising a tube (22) which accommodates a moulding (2) of adhesive mass (23) surrounding the plunger (19) at one end and which is connected at its end surrounding the upper edge (19a) of the plunger to a sleeve (27) which encircles the plunger (19) at a …
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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 November 6, 1991 and granted June 19, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.