Canadian application, no grantCanada
Gerotor pumps
CA 2046376 A1 · Owner: Freeman, Richard Robert · Inventors: Freeman, Richard Robert; Hodge, Steve
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gerotor pump has the internal leakage paths reduced by making the female lobed annulus 12 (Figure 1) as a cup shaped part receiving the male lobed rotor 10.
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 5, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 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.
FiledJuly 5, 1991
GrantedNo grant recorded
Term endedJuly 5, 2011
Patent numberCA 2046376 A1
Classification (IPC)F04C2/10
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.