Shaped charge loading tube for perforating gun
CA 2500536 C · Owner: Schlumberger Technology Corporation · Inventors: Parrott, Robert A.; Yang, Wenbo; Ratanasirigulchia, Wanchai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The loading tube comprises cups forming cup cavities for enclosing an explosive charge , within each of the cups. The loading tube has ridges and valleys providing longitudinal and , lateral strength to the loading tube. The loading tube is constructed of a formed material such as , paper pulp, high-density polystyrene plastic or sheet metal.
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 11, 2005 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.