Optical tube assembly having a dry insert and methods of making the same
CA 2506435 C · Owner: Lail, Jason C. · Inventors: Lail, Jason C.; Greenwood, Jody L.; Ottmann, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical tube assembly (10) having at least one optical waveguide (12) at , least one dry insert (14), and a tube (18). In one embodiment the dry insert , (14) has a first layer (14a) and a second layer (14b). The first layer is a polyurethane foam and the second layer is a water-swellable layer wherein the , dry insert is disposed within the tube (18) and generally surrounds the at least one optical waveguide (12).
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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 12, 2003 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2025.
- 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.