Method for measuring the dimensions of an optical connector
CA 2056141 A1 · Owner: Shigematsu, Takashi · Inventors: Shigematsu, Takashi; Yamane, Motohiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for measuring the dimension of an optical connector, consisting of a step wherein an inspection ferrule provided with a single optical fiber is inserted in each pin hole in the sample ferrule and an optical fiber or fibers are inserted in the fiber inserting hole or holes, a step wherein the sample ferrule is located on a position measuring apparatus on the X or Y axis, a step wherein a light transmitting & receiving ferrule provided with a light transmitting & receiving fiber, which is installed on a Z-axis stage, is butted against the sample ferrule with a specific distance, a step wherein the sample ferrule is moved in the direction of the axis X or Y by the position measuring …
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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 November 25, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2013.
- 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.