Deformable membrane assembly with no air intake for the delivery of fluid to pasty consistency products
CA 2129165 C · Owner: L'Oreal · Inventors: Lechelle, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Assembly for distribution of a fluid or paste product consisting of a receptacle (2) of flexible material to contain the product and a distribution head made up of a dome (3) with at least one distribution opening (4) that can be closed with a moveable p in (7) on an elastically deformable membrane (6). The receptacle (2) and dome (3) constitute a single moulded piece with a rigid insert (5) at the base of the dome (3) leaving a space (25) between it and the dome (3). The insert (5) contains channels (23) running between the space (25) and the receptacle (2) and in which the deformable membrane (6) runs. The insert (5) consists of a base (14) through which the channels (23) run and a …
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 July 29, 1994 and granted November 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2016.
- 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.