Expired Canadian patentCanada
Shaped-sweep technology
CA 2124874 C · Owner: Andersen, Kenneth D. · Inventors: Andersen, Kenneth D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing simple seismic wavelet shapes with minimal side lobe energy for use as reference signals for seismic vibrators is disclosed.
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 June 1, 1994 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 1, 1994
GrantedJanuary 5, 1999
Term endedJune 1, 2014
Patent numberCA 2124874 C
Classification (IPC)G01V1/04
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.