Optical fiber moisture sensor
CA 1324895 C · Owner: Claiborne, C. Clair · Inventors: Pearce, Henry Alexander; Pebler, Alfred Rudolf; Claiborne, C. Clair
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fiber moisture sensor is prepared by coating an optical fiber with a thin film of plasma polymerized hexamethyldisiloxane and ammonia, approximately 1-2 um thick. The light transmission characteristics of such a coated optical fiber change as a function of moisture conditions in an environment to which the coating is exposed. Accordingly, the coated optical fiber may be utilized for sensing changes in moisture conditions in an environment by being placed in the environment, causing light to be transmitted through the fiber and detecting changes in the light transmitted through the fiber as a function of the moisture conditions in the environment.
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 December 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 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.