Dispenser
CA 2469753 A1 · Owner: Colgate-Palmolive Company · Inventors: Calello, Patrick M.; Crawford, John C.; Norris, Joseph T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The dispenser is for dispensing viscous products has an ergonomic shape, and , an automatic closure (50). The closure (50) opens promptly upon initiation of an actuator (14) and before the flow of viscous product from the dispenser. Further, the closure (50) closes the dispenser outlet (16) at the end of the return of the actuator (14) to its rest position. Further an outlet valve , (46) from a pump chamber (22) remains open as an inlet valve (36) to the pump chamber opens. This causes a suckback of viscous product near the dispenser outlet (16) to flow into the dispenser. The automatic closure (50) does not close as dispenser outlet (16) until the suckback of viscous product has …
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 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 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.