Expired Canadian patentCanada
Stabilization of vinyl chloride polymers
CA 1207482 A · Owner: Goodrich (B.F.) Company (The) · Inventors: Lehr, Marvin H.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an improved heat stabilization of vinyl chloride polymers (which term includes post-chlorinated polymers) utilizing barium carbonate or cadmium carbonate that has a surface area greater than 2M2/g.
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 July 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 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.
FiledOctober 21, 1983
GrantedJuly 8, 1986
Term endedJuly 8, 2003
Patent numberCA 1207482 A
Classification (IPC)C08K3/26 +1 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.