Laminated paper-plastic insulating tape and cable including such tape
CA 1269606 C · Owner: Bosisio, Claudio · Inventors: Bosisio, Claudio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite tape for forming at least part of the insulation of a high voltage electrical cable, particularly an oil-filled cable, and a cable including such insulating tape. The composite tape includes at least one layer of paper tape having a mineral salt weight content in the range from 0.1 to 3% of the weight of the paper bonded to a surface or the surfaces of a film of polymeric material which has a thickness in the range from 10 to 30% of the total thickness of the tape. Preferred polymeric materials are polypropylene and polymethyl-pentene. A bonding material can be propylene-ethylene copolymer.
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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
- 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.