Fluororubber compositions exhibiting improved workability and mechanical properties
CA 2007303 C · Owner: Kunimatsu, Koaru · Inventors: Kunimatsu, Koaru; Komatsu, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Curable fluororubber compositions comprising an organic fluororubber, an organopolysiloxane gum and an epoxy-containing organoalkoxysilane or partial hydrolyzate thereof, a reinforcing filler and an organoperoxide are characterized by excellent roll, workability during roll milling and can be cured to yield a fluororubber which undergoes little deterioration in its mechanical properties at low temperatures.
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 January 8, 1990 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2012.
- 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.