Advance composites with thermoplastic particles at the interface between layers
CA 2016864 C · Owner: Maranci, Arutun · Inventors: Maranci, Arutun; Peake, Steven Loyalty; Kaminski, Stanley Sigmund
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to prepregs of fiber-reinforced thermosetting resin that have a coating comprising thermoplastic particles on one or both outer surfaces. Upon lamination of the prepregs into a composite the layer comprising thermoplastic particles at the surface of the prepreg is formed into a discrete resin layer in the composite at the interface between fiber-reinforced thermosetting resin layers. The laminated composite materials have improved toughness and impact strength due to the thermoplastic particulate material at the interface and yet the composites still retain desired mechanical properties under hot/wet conditions.
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
- Filed May 15, 1990 and granted July 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2012.
- 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.