Polymer claddings for optical fibre waveguides
CA 1340929 C · Owner: Dodds, Alastair S. · Inventors: Savu, Patricia M.; Hulme-Lowe, Alan G.; Dodds, Alastair S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fiber comprises a core coated with a cladding having a lower refractive index than the core the, cladding composition comprising a fluorinated monoacrylate a polyfunctional cross-linking acrylate being difunctional or higher, a photoinitiator, and optionally at least one of a thermal stabilizer and antioxidant, the composition comprising lees than 0.3% by weight of a mono- or polyfunctional thiol and being cured or cross-linked. Optical fibers are used as a means of transmitting data.
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
- Granted March 21, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 21, 2017.
- 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.