Cylindrical member with reduced air flow resistance
CA 2225476 A1 · Owner: Pluff, Frederic L. · Inventors: Pluff, Paula N.; Pluff, Frederic L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongate member for positioning transverse to a fluid flow includes a curved outer surface. A first elongate flow transition inducing structure is positioned on and extends along a substantial length of the outer surface of the elongate member transverse to the fluid flow between about 50° and 80° away from the fluid flow for reducing fluid flow resistance on the elongate member.
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 February 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2020.
- 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.