Laminated foam structures with enhanced properties
CA 2260024 A1 · Owner: Bambara, John D. · Inventors: Smith, Scott C.; Bambara, John D.; Smith, Thomas W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are foam structures (1) with enhanced physical properties which can be used in the areas of packaging, athletics water sports, and construction. , Generally the structures are laminated polymer foams that include a core (4) of a low density foam and one or more skins (6 8) of relatively high density , foam covering the core (4). The skins provide improved physical properties to the foam structures (1) by improving the flexural strength resistance to , bending, and resulting damage from bending in the laminated foam structure while modestly increasing the weight of the laminated structure (1).
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 June 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2019.
- 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.