Expired Canadian patentCanada
Compressible silicone rubber
CA 2187263 C · Owner: Wacker-Chemie Gmbh · Inventors: Huber, Wilhelm; Mittermeier, Manfred; Brennenstuhl, Werner
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 relates to compositions which crosslink to give elastomers, have a viscosity of 1,000 to 100,000 mPa?s and are based on, (A) hollow bodies of plastic and (B) crosslinkable organosilicon compounds.
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
- Filed October 7, 1996 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2018.
- 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 7, 1996
GrantedDecember 12, 2000
Term endedOctober 7, 2016
Patent numberCA 2187263 C
Classification (IPC)C08J9/32 +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.