Process for preparing advanced composite structures and products thereof
CA 2098121 C · Owner: Depuy Orthopaedics, Inc. · Inventors: Trentacosta, Joseph Daniel; Terzian, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel procedure for molding composite structures is disclosed wherein the finished part. exhibits a net shape geometry requiring minimal further machining and displaying enhanced consolidation and surface characteristics. A composite preform having a follow core portion containing a polymer insert is introduced into a mold cavity. One end of the preform core is sealed and the preform together with the polymer insert is heated to melt the composite matrix and core polymer. Pressure is applied to the core at the other end of the part, causing radial expansion of the part against the molded cavity and consolidation of the composite into a finished part. A product finished part is also …
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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 December 10, 1991 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 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.