Method of repairing shed portion of composite insulator
CA 2200158 C · Owner: Ngk Insulators, Ltd. · Inventors: Tani, Takao; Kashiwagi, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disclosed method of repairing a shed portion of a composite insulator having a core portion a sheath portion, arranged on an outer surface of the core portion and a, plurality of shed portions projected from the sheath portion includes the steps of, (1) cutting out the shed portion having defects from a portion thereof adjacent to the sheath portion and connecting a new shed portion having the same shape as that of the cut out shed portion to the sheath portion at the cut out portion, or (2) cutting out partly said shed portion having defects, and connecting a repairing member to said cut out portion. Therefore, it is possible to perform the shed portion repairing operation without …
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 March 17, 1997 and granted October 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 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.