Corrosion resistant barriers
CA 2331639 A1 · Owner: Neukirchen, John D. · Inventors: Neukirchen, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to salt water, waste water atmospheric and other , corrosion resistant barrier apparatus and radioactive contamination containment barrier apparatus that are applied to a substrate such as to , metal, steel, concrete, rock stone, ceramic material, tile, and the like and , methods for manufacturing the same. The apparatus (20) generally comprises an asphaltic mastic basecoat (24) and a thermpoplastic topcoat (26) which is at least partially melted and integrated into the mastic basecoat (24). Alternatively, the apparatus (20) further contains a solvent primer (28) which is applied to the substrate (22) prior to the application of the mastic basecoat (24).
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 May 12, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2020.
- 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.