Pulse generator
CA 2108080 C · Owner: Sakugawa, Takashi · Inventors: Hara, Kiyoshi; Yanase, Hisashi; Sakugawa, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pulse generator has a switch circuit for switching a supply of a first current through a circuit. A first condenser is serially connected to the switch circuit and charged by the first current. A voltage raising transformer, used to obtain a voltage output by the first current, has a primary winding serially connected to the first condenser, and a secondary winding. A magnetic switch transformer, used to switch current flow has a primary, winding serially connected to the secondary winding of the voltage raising transformer, and a secondary winding. A second condenser is connected to the secondary winding of the magnetic switch transformer and charged by an output therefrom. A discharge …
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 October 8, 1993 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2015.
- 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.