Optical reflective star device
CA 2070122 C · Owner: Koninklijke Ptt Nederland N.V. · Inventors: Van Deventer, Mattijs Oskar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical reflective star device having a number of ports for distributing each signal fed to a port over the other ports. Said optical reflective star device is made up a number of star elements and comprises a number of reflectors provided at reflection points in the reflective star device. At least one of the reflectors is an orthogonal polarisation reflector.
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 1, 1992 and granted December 8, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 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.