Input amplifier circuit
CA 2112203 C · Owner: Nec Corporation · Inventors: Uriya, Susumu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An input amplifier circuit including a gate circuit for amplifying such as a NAND circuit or a NOR circuit, in which a signal to be amplified is input from a first input terminal and an operating state or an unoperating state is selected by an enable signal input to a second input terminal and a switch, circuit including a resistance part which is connected between the first input terminal and the output terminal of the NOR circuit and is controlled by the enable signal. A first MOS transistor is connected between a direct current power source and the first input terminal and is controlled by the enable signaland a second MOS transistor is connected between the first input terminal and …
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 December 22, 1993 and granted September 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 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.