Aqueous-based waterproofing primer system and method
CA 2097756 A1 · Owner: Gaidis, James Michael · Inventors: Wiercinski, Robert Alan; Jenkins, Robert Francis; Gaidis, James Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Attorney Case No. 339, ABSTRACT OF THE DISCLOSURE The present invention provides a waterproofing system and method in which salt is used to prevent re-emulsification of an aqueous-based emulsion polymer primer composition which has been applied to a water penetrable building surface, whereby the bond between the building structure and a subsequently applied waterproofing membrane remains strong and durable. WPMMD/ID38/1-13
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 4, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2015.
- 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.