Expired Canadian patentCanada
Brush applied alkali-based paint stripper compositions
CA 1236760 A · Owner: Sterling Drug Inc. · Inventors: Taylor, Philip G.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paint stripper compositions based on alkali particularly caustic, soda, together with a mixture of a clay gelling agent and a gum gelling agent in an aqueous dispersion, the ratio of clay to gum being in excess of 1:1 by weight.
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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
- Granted May 17, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1984
GrantedMay 17, 1988
Term endedMay 17, 2005
Patent numberCA 1236760 A
Classification (IPC)C09D9/00
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.