Devices comprising ptc conductive polymers
CA 1262467 C · Owner: Chan, Randolph W. · Inventors: Chan, Randolph W.; Van Konynenburg, Peter H.; Wartenberg, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pravin L. Soni, Peter H. van Konynenburg Mark Wartenberg, Randolph W. Chan, Stephen M. Jacobs ABSTRACT OF THE DISCLOSURE, Heat-recoverable electrical devices particularly, for covering telephone and other cable splices comprise (a) a component composed of a PTC conductive polymer which has little or no cross-linking 12) an, adjacent heat-recoverable component composed of a PTC or ZTC conductive polymer which has a relatively high level of cross-linking, and (3) electrodes which can be connected to a power supply so that current passes through the components and causes recovery of the device. Preferably a continuous laminar PTC component having little or no crosslinking is sandwiched between …
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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 October 24, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 24, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.