Expired Canadian patentCanada
Holding device for an optical element
CA 2437984 C · Owner: Intergraph (Deutschland) Gmbh · Inventors: Trunz, Michael; Hinz, Alexander
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 holding device for an optical element is formed at least in part, of a silicon-containing aluminum material.
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 August 21, 2003 and granted March 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 2003
GrantedMarch 6, 2012
Term endedAugust 21, 2023
Patent numberCA 2437984 C
Classification (IPC)G02B7/00 +2 more
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.