Expired Canadian patentCanada
Cationic starch/vinyl acetate containing board coating binders
CA 2116020 C · Owner: Nguyen, Charles C. · Inventors: Tupper, D. Eric; Nguyen, Charles C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Board coating compositions are provided comprising a cationic starch and a vinyl acetate polymerization product as protein binder substitutes.
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 17, 1993 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1993
GrantedAugust 8, 2000
Term endedJune 17, 2013
Patent numberCA 2116020 C
Classification (IPC)C09D151/02 +2 more
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.