Process to seal concrete structures and buildings against water entry
CA 2135409 A1 · Owner: Tennenbaum, Renee · Inventors: Nelson, William Ernest
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a long-lasting reliable sealant comprising, a mixture of petroleum waxes and glass fibre and includes a, process of injecting the sealant at a high temperature into cracks crevices and hollows in a building's foundation walls at points below the ground surface thereby preventing water-entry into the building. The sealant, using the specified process of application will also aid in maintaining a building's structural integrity through the elimination of water-entry.
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 9, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2016.
- 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.