Dispenser pump
CA 2544103 C · Owner: Boehnisch, Karsten · Inventors: Schulte, Frank Erwin; Menzel, Norbert; Boehnisch, Karsten
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a dispenser pump (1) comprising a manually insertable pump shaft (6). Said pump shaft (6) is surrounded by at least three sleeve sections (16 17, 18) that can be slid into each other in a telescopic manner. A return spring (8) is preferably disposed between the pump shaft (6) and the sleeve sections (16, 17, 18). All parts of the dispenser pump (1) which enter in , contact with a liquid that is to be pumped are made of plastic.
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 October 29, 2004 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2024.
- 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.