Polyester film for electrical insulation
CA 2269627 A1 · Owner: Nagai, Itsuo · Inventors: Aoki, Seizo; Deguchi, Yukichi; Nagai, Itsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyester film for electrical insulation having an apparent density of 1.37- 0.85 g cm3 and a modulus of tensile elasticity of 2.0-4.5 GPa. The film has a low oligomer property, a high heat resistance a high shock resistance, a high , formability an excellent incorporation stability, and improved visibility. When this film is used for electrical insulation of motors leakage currents , hardly flow.
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 August 25, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 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.