P

Inventor

YAMAGUCHI ATSUO

JP36 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGUCHI ATSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI ELECTRIC CORP

26 patents
US5874725AFeb 23, 1999

Non-contact IC card with phase variation detector

MITSUBISHI ELECTRIC CORP100 citations99
US5056089AOct 8, 1991

Memory device

MITSUBISHI ELECTRIC CORP155 citations99
US6107864AAug 22, 2000

Charge pump circuit

MITSUBISHI ELECTRIC CORP142 citations98
US5831257ANov 3, 1998

Non-contact IC card including phase-locked loop circuitry

MITSUBISHI ELECTRIC CORP34 citations96
US5801372ASep 1, 1998

Non-contact IC card with antenna switching circuit

MITSUBISHI ELECTRIC CORP81 citations96
US5698838ADec 16, 1997

Non-contact IC card including antenna circuit with adjustable resonant frequency

MITSUBISHI ELECTRIC CORP72 citations96
US5535160AJul 9, 1996

Semiconductor integrated circuit

MITSUBISHI ELECTRIC CORP60 citations96
US5068521ANov 26, 1991

Non-contact ic card

MITSUBISHI ELECTRIC CORP74 citations96
US5047924ASep 10, 1991

Microcomputer

MITSUBISHI ELECTRIC CORP78 citations96
US6747548B1Jun 8, 2004

Non-contact IC card system and non-contact IC card

MITSUBISHI ELECTRIC CORP28 citations92
US5942926AAug 24, 1999

PLL circuit

MITSUBISHI ELECTRIC CORP20 citations92
US5375083ADec 20, 1994

Semiconductor integrated circuit including a substrate having a memory cell array surrounded by a well structure

MITSUBISHI ELECTRIC CORP23 citations92
US5226167AJul 6, 1993

Microcomputer circuit for attenuating oscillations in a resonant circuit by reversing phase and feeding back resonant circuit output oscillation voltage

MITSUBISHI ELECTRIC CORP40 citations92
US5036460AJul 30, 1991

Microprocessor having miswriting preventing function

MITSUBISHI ELECTRIC CORP42 citations92
US5594692AJan 14, 1997

Semiconductor integrated circuit

MITSUBISHI ELECTRIC CORP14 citations74
US5517460AMay 14, 1996

Semiconductor integrated circuit and IC card using the same

MITSUBISHI ELECTRIC CORP15 citations74
US5432328AJul 11, 1995

Non-contact IC card detecting power-on signal by receiving external input signal having voltage magnitude outside power supply voltage range

MITSUBISHI ELECTRIC CORP16 citations74
US5396056AMar 7, 1995

Non-contact IC card having an active attenuation circuit

MITSUBISHI ELECTRIC CORP10 citations74
US5365047ANov 15, 1994

IC card with clock signal input control

MITSUBISHI ELECTRIC CORP18 citations74
US5308968AMay 3, 1994

Non-contact IC card which actively attenuates its resonance circuit as it receives data

MITSUBISHI ELECTRIC CORP13 citations74
US5159183AOct 27, 1992

Ic card

MITSUBISHI ELECTRIC CORP13 citations74
US5039850AAug 13, 1991

IC card

MITSUBISHI ELECTRIC CORP18 citations74
US5019970AMay 28, 1991

IC card

MITSUBISHI ELECTRIC CORP18 citations74
US5016212AMay 14, 1991

IC card having system ROM selection inhibit

MITSUBISHI ELECTRIC CORP13 citations74
US4924465AMay 8, 1990

Memory with function test of error detection/correction device

MITSUBISHI ELECTRIC CORP15 citations74
US5160856ANov 3, 1992

Reference voltage regulator semiconductor integrated circuit

MITSUBISHI ELECTRIC CORP4 citations60

RENESAS TECH CORP

3 patents

FUKUSHIMA KAZUHIKO

3 patents

MIYAUCHI SHIGENORI

2 patents

TSURUTA HIROKAZU

2 patents