Stabilizer composition for cable sheathings
CA 2218792 C · Owner: Forster, Stefan · Inventors: Forster, Stefan; Rosenthal, Michael; Reith, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of a molding composition containing, halogen-containing polymers in particular polyvinyl chloride, and a special stabilizer composition for cable sheathings. Thanks to the stabilizer composition which contains at least one optionally surface-modified hydrotalcite at least one basic, calcium-aluminum-hydroxy-phosphite and/or at least one basic calcium-aluminum-hydroxy-carboxylate and optionally at least one liquid or solid organic or inorganic zinc salt, the high electrical resistance value of the molding composition remains constant over a long period of time, also under the action of moisture as is required for cable, sheathings.
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 21, 1997 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2019.
- 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.