Expired Canadian patentCanada
Fused, thermoplastic partitioning agent and preparation of crumb rubber coated therewith
CA 1104288 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Gunnerson, Hanford L.; Grimm, Donald C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fused, thermoplastic partitioning agent for elastomeric crumb materials is prepared from polymethyl methacrylate and a resinous styrene-butadiene copolymer.
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 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1977
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104288 A
Classification (IPC)C08L25/10 +2 more
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.