Inventor

IIJIMA YASUO

JP61 patents

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

IIJIMA YASUO

TOSHIBA KK

Portable electronic device supporting multi-protocols

Mutual authentication system and method which checks the authenticity of a device before transmitting authentication data to the device

Portable electronic device with plural memory areas

Portable electronic device with garbage collection function

Data transmission system using electronic apparatus having a plurality of transmission protocols

System for mutually certifying an IC card and an IC card terminal

Portable electronic apparatus having key data for limiting memory access

File management apparatus for IC card

File management system for memory card

Method and system for allocating file space in memory of ic card

Mutual authentication system

Data communication system

Method and system for allocating file area in memory area of ic card

Portable electronic device with memory having data pointers and circuitry for determining whether a next unwritten memory location exist

Portable electronic apparatus with data remaining counter

Programmable portable electronic device

Issuing customized IC cards of different types

File managing method requiring a change in key data and IC card device using the method

Transmission method of changing protocol and data processing apparatus using this method

Memory card available for various formats

Security for a data processing system having multiple distinct program instruction sections

File management system for memory card

File management system with file-size flexibility

IC card processing system capable of determing send timing between an IC card and an accepting device

Cipher communication system for transaction data

Portable electric device

Portable electronic device capable of selectively providing unused area size of whole memory or memory segments to external device

Processing system which transmits a predetermined error code upon detection of an incorrect transmission code

Portable electronic apparatus for writing and reading data to and from an external device and performing data memory allocation

Microcomputer incorporating memory

Portable electronic apparatus

Portable electronic device

Data storage system having circuitry for dividing received data into sequential wards each stored in storage region identified by chain data

Processing system for enabling data communication with a self-diagnose device

Portable electronic apparatus having a function of checking for empty areas in which to write data

Portable electronic apparatus with a device for determining data validity

Data transmission apparatus selectively using two clock signals

Data storage apparatus having memory area with a predetermined logic type

Portable electronic apparatus

Data processing system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Insulation testing method and apparatus therefor

Magnetic recording medium

High speed dynamic run-out testing apparatus and method

Oil impregnated electric device

Method of nondestructive insulation test and a nondestructive insulation testing apparatus

Surge testing method in decompressed atmosphere for a small-size electric machine and apparatus thereof

JP NAT RES INST FOR METALS

Process for producing ultrafine multifilamentary Nb3(A1,Ge) or Nb3(A1,Si) superconducting wire

NAT RES INST METALS

Multifilament Nb3 Al superconducting linear composite articles

NAT INST FOR MATERIALS SCIENCE

Process for the production of Nb3A1 extra-fine multifilamentary superconducting wire

AGENCY IND SCIENCE TECHN

CU-containing NB3A1 multifilamentary superconductive wire and process for producing the same