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Expired Canadian patentCanada

Measuring cognitive load

CA 2655189 C · Owner: Ruiz, Natalie · Inventors: Choi, Eric; Ruiz, Natalie; Chen, Fang

CIPO record

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Abstract From the Canadian patent

This invention concerns a method for measuring cognitive load of a person in performing a task. In other aspects the invention can be expressed as a computer and as software that are used to perform the method. The computer (50) has an interface having a plural number of unimodal input (20 30 to 40) and output devices, and a cognitive load analyser (50). The analyser comprises a receiver to receive input data signal streams (25 35 and 45) from respective devices (20 30 and 40). A classifier (56 to 59), (66 to 69) and (76 to 79) is also provided to identify predetermined ~meta-interaction patterns~ from the streams (25 35 and 45), and to weight the identified predetermined ~meta-interaction …

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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 28, 2006 and granted January 26, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2026.
  • 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.
FiledJune 28, 2006
GrantedJanuary 26, 2016
Term endedJune 28, 2026
Patent numberCA 2655189 C
Classification (IPC)A61B5/16

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJune 28, 2006Patent grantedJan 26, 2016Term endedJune 28, 2026

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.