Expired Canadian patentCanada
Cyclotrisiloxanes containing silicon-bonded fluoroalkoxyalkyl groups
CA 1048522 A · Owner: General Electric Company · Inventors: Wu, Tse 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
Novel cyclotriailoxanes having the formula wherein R and R1 are CH3 or -(CH2)3-O-CF(CF3)3 are intermediates for the preparation of oil- and heat-resistant silicone rubbers.
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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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 13, 1979
Term endedFebruary 13, 1996
Patent numberCA 1048522 A
Classification (IPC)C07F7/21 +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.