Blood pressure measuring apparatus
CA 1268641 C · Owner: Yamaguchi, Keiji · Inventors: Yamaguchi, Keiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blood pressure measuring apparatus displays that pressurization of a pressure cuff affixed to a patient is inadquate when elapsed time from the start of cuff depressurization to the detection of an initial sound of blood flow through the patient's blood vessel is shorter than a time interval between adjacent blood flow sounds which interval approximately coincides with the patient's pulse interval.
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
- Granted May 8, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 2007.
- 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.