Production of copolymer latices
CA 2081820 A1 · Owner: Maeda, Fuyuo · Inventors: Suzuki, Shigeo; Maeda, Fuyuo; Seo, Tomotaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure There is disclosed a method of producing copolymer latices which are useful as binders in paper coating compositions capable of providing coated papers with good and balanced physical characteristics including, adhesive strength, water resistance ink acceptability, and sheet gloss and which can further be used as carpet backing agents and as adhesives.
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 October 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 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.