Coated metal fastener and coating composition therefor
CA 2060607 A1 · Owner: Shelton, Lawrence S. · Inventors: Gabriel, William L.; Lat, Geronimo E.; Shelton, Lawrence S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coated metal fastener and a coating composition that has particular affinity for plaster materials and the like is disclosed. The composition that is applied to the fastener contains a copolymer of styrene and maleic anhydride and a thermoplastic resin preferably polyvinyl acetate, in an inert organic solvent. The organic solvent can be an aromatic solvent, a ketone, a chlorohydrocarbon or a mixture, thereof. The composition is applied to the fastener by conventional methods and cured thereon at about ambient temperature.
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 February 4, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2014.
- 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.