Yoshitaka Umeki

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Tokyo, JP

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Patents Grantslast 30 patents

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Emitter-coupled logic output circuit
- Patent number 5,124,581
- Issue date Jun 23, 1992
- NEC Corporation
- Yoshitaka Umeki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
ECL-TTL level converter
- Patent number 4,883,990
- Issue date Nov 28, 1989
- NEC Corporation
- Yoshitaka Umeki
- H03 - BASIC ELECTRONIC CIRCUITRY
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Emitter coupled logic circuit provided with pull-down resistors at...
- Patent number 4,771,190
- Issue date Sep 13, 1988
- NEC Corporation
- Yoshitaka Umeki
- H03 - BASIC ELECTRONIC CIRCUITRY
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Schmitt trigger circuit
- Patent number 4,694,198
- Issue date Sep 15, 1987
- NEC Corporation
- Yoshitaka Umeki
- H03 - BASIC ELECTRONIC CIRCUITRY
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Master-slave type flip-flop circuits
- Patent number 4,689,497
- Issue date Aug 25, 1987
- NEC Corporation
- Yoshitaka Umeki
- H03 - BASIC ELECTRONIC CIRCUITRY