Dispensing closure for squeeze bottle
CA 2089640 C · Owner: Bennett, Edward M. · Inventors: Perlmutter, Thom M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid dispensing closure mechanism installable on the neck portion of a plastic squeeze bottle to control the outflow of liquid from the bottle. In one form of the dispensing closure, a movable closure body (26) has an open position and a closed position in which closed position the closure body fits tightly on the associated cap member (10). In another form of the dispensing closure, the movable closure body has two closed positions, in one of which the closure body (26) fits tightly on the associated cap member (10) and in the other of, which it fits loosely on the cap member whereby it is readily, movable to the open position with only slight manual effort. A twist lock feature (41, …
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 19, 1991 and granted January 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.