A pressure dispensing pump
CA 2122495 A1 · Owner: Novapharm Research (Australia) Pty Limited · Inventors: Brennan, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to pressure dispensing pumps which are capable of dispensing a predetermined amount of a fluent mass whether thus mass be liquid, semi-liquid semi-solid or of a gel or, paste like substance. The invention comprises a pressure dispensing pump (1) having a housing (2) adapted to be attached to a fluent container said housing including an inlet port (3) said dispensing pump including a valve means (4) for said inlet port and further comprising a pressure chamber portion (5) which integrally includes an outlet port with valve means (7) to close said outlet port. The invention also includes a pressure dispensing pump containing a pressure chamber portion (5) which …
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 November 4, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2014.
- 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.