Device for measuring a phase shift, which is not reciprocal, produced in a ring interferometer
CA 1208452 A · Owner: Thomson-Csf · Inventors: Puech, Claude; Papuchon, Michel; Arditty, Herve
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ring-shaped interferometer comprising a phase shifting optical device which acts on the rays passing through the ring, this device containing an oscillator which delivers a periodic voltage of frequency 1/2 ? in which ? is the time taken by a ray to pass through the ring and a saw-tooth generator whose resonant frequency is slaved to a non reciprocal phase shift.
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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
- 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.