Nontacky shaped objects from polymer latices
CA 1091864 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Marquisee, Mark J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Montacky, elastomeric shaped objects (e.g. pellets or filaments) comprising a normally tacky uncured elastomer, having an integral, porous coating of silicic or aluminic acid polymer can be prepared by bringing shaped bodies of a normally tacky, uncured elastomer latex into contact with an aqueous bath containing a soluble coagulating salt for the latex and a, silicic or aluminic acid polymer and washing and drying the, resulting coated shaped objects. The shaped objects are highly porous before washing and drying and some porosity, remains even after washing and drying.
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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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.