Microwave oven leakage checker
CA 2113850 C · Owner: Kumar, Akhileshwar · Inventors: Kumar, Akhileshwar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave leakage checker for domestic and industrial microwave oven and microwave communications equipment is disclosed. In this invention the leakage checker consists of a antenna (two identical elements) a plane small reflector, a detector and matching circuit a moving coil meter and a plastic cover. The antenna is placed at 0.25 wavelengths from the reflector to receive maximum energy from electromagnetic radiation. The received radiated energy by the antenna is picked up by the detector and the matching circuit (components) to provide appropriate current for the moving coil meter. The deflection of moving coil meter is proportional to the recieved current. The moving coil meter is …
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 January 20, 1994 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2016.
- 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.