Viscous liquid dispenser
CA 2092829 A1 · Owner: Anglehart, Dwight · Inventors: Anglehart, Dwight
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a viscous liquid dispenser (1) comprising a reservoir (3) for holding the liquid (at least a part of the reservoir (3) being resiliently squeezable) a measuring channel (2), for measuring therein a quantity of the liquid to be dispensed a, spout (8) in communication with an upper part of the channel (2) and an air trap including an air chamber (6) and a passage (11). A lower end (4) of the channel (2) is in communication with one side of the chamber (6), and the passage (11) communicates an opposite side of the chamber (6) with the reservoir (3). In this way upon squeezing the reservoir (3), the flow of the liquid through the passage (11) to the lower end (4) of the …
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 August 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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.