Laminates, panels and means for joining them
CA 2003638 A1 · Owner: Sobolev, Igor · Inventors: Sobolev, Igor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention discloses sandwich panels i.e. laminates which comprise two metal sheets with a filled reinforced resin core between a bonded metal sheets which are, useful for structural and other uses. This invention discloses combinations of metal skins, resins, fillers and reinforcement, bonded together in the sandwich structure to provide a laminate having a flexural modulus of at least 2.5 million psi a rigidity, index of at least about 2,000 and other unique properties which enable the laminates to be particularly useful for thin wall trailer body construction, as well as other uses. This invention discloses a rigidity index property for sandwich structures and panels and a falling …
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 November 22, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2011.
- 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.