Expired Canadian patentCanada
Modifying the coating on optical fibres
CA 2479863 C · Owner: Kashyap, Raman · Inventors: Kashyap, Raman
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to the modifying or stripping of primary or secondary coatings on optical fibres by the application of heat such that the coating is entirely or partially removed from the surface over a given length of , an optical fibre.
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 31, 2004 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2026.
- 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 31, 2004
GrantedApril 17, 2012
Term endedAugust 31, 2024
Patent numberCA 2479863 C
Classification (IPC)G02B6/00 +1 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.