Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole
CA 1306827 C · Owner: Squire, Edward Noonan · Inventors: Squire, Edward Noonan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, AMORPHOUS COPOLYMERS OF PERFLUORO-2,2- DIMETHYL-1,3-DIOXOLE, ABSTRACT OF THE DISCLOSURE Amorphous copolymers of perfluoro-2,2dimethyl-1,3-dioxole with at least one fluoro comonomer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro- 2,2-dimethyl-1,3-dioxole, in no event less than 65% have high glass transition temperatures of 140°C or higher, low indices of refraction, and good physical properties, and low dielectric constants which make, them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in …
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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
- 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.