Isotopic fiberoptics
CA 1313071 C · Owner: Berezin, Alexander A. · Inventors: Chang, Jen-Shih; Berezin, Alexander A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fiber in which chemical non-uniformities leading to optical losses at the core and cladding interface are minimized by selecting materials for the core and the cladding which are chemically substantially identical at least one, element in the core being the isotope of the corresponding element in the cladding and selected to impart a refractive index in the core which exceeds the refractive index in cladding.
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 January 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2010.
- 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.