Structure forming method, apparatus and product
CA 2251349 C · Owner: Payne, Leroy · Inventors: Payne, Leroy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and apparatus (11) for forming a continuous structure (85) includes the steps of preselecting a liquid reactive resin forming material (96), a particulate solid additive material (97) and a porous blanket (78, 95), mixing and encapsulating the additive particles (97) with the liquid resin forming material (96) while tumbling the materials along a cylindrical mixing chamber (51). The leading edge of the structure is grasped with a gripping device (73) along substantially its entire length and advanced over a horizontal supporting surface (71). Once a desired length has been formed a cutting device (82) cuts the structure (85) and the cut portion is placed into a final …
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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 September 27, 1996 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2018.
- 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.