Multimaterial diaphragm
CA 2585995 C · Owner: Norton Healthcare Ltd. · Inventors: Holroyd, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diaphragm comprising a relatively rigid central disk made of a first material , characterized by a relatively high stiffness; a peripheral attachment ring disposed , about a peripheral portion of the disk; and an annular flexure made of a second , material characterized by a relatively low stiffness and extending between , the , peripheral portion of the disk and the attachment ring. Where the annular flexure is , bonded to the disk, and the disk the annular flexure and the peripheral ring form a , contiguous assembly.
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 8, 2001 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2023.
- 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.