Low loss high numerical aperture cladded optical fibers
CA 2114796 C · Owner: Babirad, Stefan A. · Inventors: Kuczma, Andrew S.; Savu, Patricia M.; Babirad, Stefan A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a curable coating composition comprising at least one fluorinated monoacrylate monomer at least one polyethylenically unsaturated fluorinated cross-linking monomer different from the acrylate monomer, and at least one adhesion promoting monomer different from any other monomer in the composition of matter, which preferably is a fluorinated acrylamide silane. Optionally, fluorinated acrylamide silane monomers non-fluorinated mono- or polyethylenically unsaturated monomers, or non-fluorinated silane adhesion promoting monomers may be added. The free radical polymerization product of the aforementioned coating composition provides a novel cladding 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 July 16, 1992 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2014.
- 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.