Apparatus for manipulating corrosion coupons and the like
CA 1052265 A · Owner: Standard Oil Company · Inventors: Dendy, Jackie D.; Jeffers, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A static monitoring device (such as a corrosion coupon) manipulating apparatus for petroleum pipelines is described which allows the monitoring device to be run in and later pulled out without depressurizing the pipeline. Part of the apparatus can be removed while the monitoring device is in the pipeline, thus greatly reducing the likelihood of damage to the apparatus and pipeline. The removal of a portion of the apparatus also allows this portion to be reused to manipulate monitoring devices at different locations.
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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- 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.