Pressure or strain sensitive optical fiber
CA 1304243 C · Owner: Svetaka, Patrice Anne · Inventors: Svetaka, Patrice Anne; Levin, Philip Stephen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pressure sensitive optical fiber having core means at least a portion of which has a predetermined refractive index for transmitting light therethrough cladding means, adjacent the core means having a refractive index which is less than that of the core means and concentric light transmissive means adjacent the cladding means having refractive index which is greater than that of the cladding means and through which light passes in proportion to the amount of stress or strain induced in the fiber. Also pressure sensors and methods for measuring forces or pertubations utilizing such fiber.
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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- 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.