Process for commissioning pipelines
CA 2050256 A1 · Owner: Powers, Marvin D. · Inventors: Powers, Marvin D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for commissioning pipelines is disclosed which more safely, reliably and economically establishes product purity in the line and reduces the possibilities of structural damage to the pipeline. These advantages are achieved through the use of a specially adapted portable heating system. The system is capable of safely heating petrochemical products in a controlled manner and at rates sufficient to provide adequate input flows of commissioning product whose temperature is adjusted to be substantially the same as that of the nitrogen being displaced from the pipeline that is being commissioned.
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 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2013.
- 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.