Piston carrying guide tube
CA 2549972 C · Owner: Ophardt, Heiner · Inventors: Ophardt, Heiner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A piston pump is provided in which the piston-chamber forming member has a chamber within which a piston of a piston forming element is coaxially slidable. A locating member is provided on the piston forming element for engagement of the piston- chamber forming member externally of the chamber to assist the piston-chamber forming member and the piston forming element while sliding axially maintaining the piston centered and coaxial relative to the chamber.
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 June 13, 2006 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.