Corrosion barrier for automotive weatherstrips
CA 2120808 C · Owner: Sears, Henry Eldon · Inventors: Belser, John William; Sears, Henry Eldon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automotive beltline weatherstrip engaging an end flange of a vehicle for operative sealing between a glass window and a vehicle surface. The beltline weatherstrip having a core metallic layer and a dissimilar outer appearance metallic layer, separated by a film barrier layer thereby preventing galvanic corrosion. A further aspect of the present invention relates to processes by which the weatherstrip with two dissimilar materials, separated by a barrier layer can be manufactured.
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 April 7, 1994 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 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.