Process for waste encapsulation
CA 1201838 A · Owner: The Dow Chemical Company · Inventors: Carini, Pietro T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a process of encapsulating aqueous liquid wastes in liquid thermosettable resins of the group consisting of vinyl ester resins, unsaturated polyester resins, and mixtures thereof, wherein the waste is emulsified in the resin. The invention is characterized by incorporating in the waste-resin emulsion both a water-soluble polymeric substance containing a carbon chain having a plurality of -COOH groups or derivatives thereof and a water, soluble salt of carboxymethyl cellulose.
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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2003.
- 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.