Patent Yard Sign in
Expired Canadian patentCanada

Simplified keyboard and electronic musical instrument

CA 2250089 C · Owner: Johnson, Gerald L. · Inventors: Johnson, Gerald L.; Pawlowski, J. Thomas

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Disclosed is an electronic musical instrument comprised of operators organized in repeating patterns of seven. The operators are electronically interpreted to correspond only to the valid notes of a selected scale. The repeating patterns of seven notes directly corresponds to the vast majority of music theory and thus constitutes an enormous simplification in the art of learning, performing and composing music. The present invention enables users of the electronic musical instrument to master chord and note progressions in any scale and mode by learning only a single set of note patterns, in contrast to the myriad scales chord and, note patterns which must be learned on traditional keyboard …

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 26, 1996 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2018.
  • 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 26, 1996
GrantedAugust 13, 2002
Term endedJune 26, 2016
Patent numberCA 2250089 C
Classification (IPC)G10B3/12 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJune 26, 1996Patent grantedAug 13, 2002Term endedJune 26, 2016

Sources & verification

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