Aqueous coating composition
CA 2032094 A1 · Owner: Dieter, Jerry A. · Inventors: Saeidifar, Mohammad H.; Dieter, Jerry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous composition comprising a film forming latex binder having a glass transition temperature (Tg) of at least 0°C and a synthetic elastomer composition having a Tg of at least -10°C selected from the group consisting of polybutadiene, ethylene propylene copolymer, butyl rubber, nitrile rubber poly-, chloroprene, polyisoprene, and mixtures thereof wherein the difference between the Tgs of the binder and the elastomer is at least 15°C and the coating composition has a tubular viscosity of about 3 to about 20 seconds to pass a 50 g sample through a 1" cylindrical tube having 0.125" orifice with an applied pressure of 10 pounds/sq" (psi).
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 December 12, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2012.
- 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.