Waterproofing sheet
CA 2433253 A1 · Owner: Gordun Burillo, Fernando · Inventors: Gordun Burillo, Fernando
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It comprises three layers: a first layer of plastic material that provides the whole with mechanical strength, a second intermediate layer of foam forming a union between the first and second layer and a third layer of impermeable , plastic material and is characterised in that the first layer (2) is mase on an elastomeric polyolefin of high strength and elasticity in that the second , layer (3) is of closed-cell physically or chemically cross-linked polyethylene foam, and in that the third layer (4) is of polyolefin with high tear resistance. A light waterproofing sheet is obtained which withstands extreme meteorological conditions, is resistant to chemical agents while it , also has …
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 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2023.
- 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.