Coatings with sulfonated polymers
CA 1319266 C · Owner: Pasternak, Israel Szabsai · Inventors: Thaler, Warren Alan; Drake, Evelyn Nobles; Manalastas, Pacifico V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite comprising a substrate selects from urea, fertilizers and micronutrients and an elastomeric coating adhered to at least one surface of said substrate said elastomeric coating having a thickness of about 1 to about 100 micrometers, wherein said elastomeric coating comprises a neutralized sulfonated polymer having a sulfonate content of about 4 to about 200 meq. per 100 grams of said neutralized sulfonated polymer.
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
- Granted June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
- 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.