Environmentally degradable ethylene polymeric compositions
CA 1089580 A · Owner: Union Carbide Corporation · Inventors: Potts, James E.; Sracic, Albert M.; Cornell, Stephen W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An environmentally degradable polymer composition comprising an ethylene polymer base resin and a synergistic combination of an auto-oxidative = polymer or low molecular weight organic compound; certain polyvalent transition metal salt; and an antioxidant additive for the ethylene polymer. A product of this composition when discarded to the environment is caused to deteriorate by the action of the elements thereby, hastening the deterioration of litter.
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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 November 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 11, 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.