Coating compositions
CA 2044892 C · Owner: Union Carbide Chemicals And Plastics Company Inc. · Inventors: Giles, Frederick A. Jr.; Glancy, Charles W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coating compositions which provide coatings having enhanced properties, e.g. gloss are disclosed. The, coating compositions may be water-borne compositions or, may be water-reducible or water-dispersible compositions including a thermoplastic resin component. Such compositions include a gloss enhancing amount of a nitrogen-containing component selected from compounds having the formula, and mixtures thereof wherein each R is independently, selected from the group consisting of H monovalent, hydrocarbyl radicals having 1 to about 4 carbon atoms and, divalent hydrocarbyl radicals having 1 to about 2 carbon atoms, R'OH wherein R' is a divalent hydrocarbyl radical having 1 to about 4 carbon …
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 June 18, 1991 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2013.
- 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.