Electronic step counting shoe
CA 2199458 C · Owner: Huang, Tien-Tsai · Inventors: Huang, Tien-Tsai
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic step counting shoe which includes a shoe body holding a fluid container, a pressure sensor a circuit, board, and a LCD, the circuit board having a pressure converter connected to the pressure sensor, and a microprocessor the, pressure converter converting pressure signal from the pressure sensor into corresponding electric signal for processing into corresponding digital signal by the microprocessor, permitting the digital signal thus obtained to be shown through the LCD through the control of a function switch.
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 7, 1997 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2019.
- 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.