Electrical wire and cable
CA 1259186 A · Owner: Raychem Limited · Inventors: Smith, Timothy S.; Thornley, David W.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrical Wire and Cable, Electrical wire and cable is provided with a layer of insulation or jacketing material which comprises a mixture of:, (1) a polyester based on tetramethylene terephthalate preferably polytetramethylene terephthalate; and (2) more than 40%, based on polymer (1) of a block, copolymer preferably having polytetramethylene terephthalate hard blocks and poly(polytetramethylene oxide terephthalate soft blocks. Polymer (2) is a flex modulus of at least 69 MPa preferably at least 138 MPa. The insulation or jacketing material exhibits improved resistance to stress crazing in a number of solvents.
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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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.