Method of sealing
CA 2118391 A1 · Owner: Descamps, Pierre · Inventors: Descamps, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification describes and claims a method of bonding a sealant to an anodised aluminium surface the method comprising the steps of (1) measuring the electrical impedance of anodised aluminium substrates, (2) selecting at least one substrate having an electrical phase shift of from 0.4 to 0.5 (3), cleaning the anodised surface of the substrate (4) applying to, the anodised surface a curable silicone sealant composition and (5) bringing about curing of the sealant composition to form a bond between the anodised surface and the sealant.
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 October 18, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 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.