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OIKAWA HISAO

Overview
  • Total Patents
    14
About

OIKAWA HISAO has a total of 14 patent applications. Its first patent ever was published in 1978. It filed its patents most often in Japan. Its main competitors in its focus markets telecommunications and audio-visual technology are MACROS JAPAN INC, WEIQUAN YU and OOO AL TONIKA OOO AL TONIKA.

Patent filings in countries

World map showing OIKAWA HISAOs patent filings in countries
# Country Total Patents
#1 Japan 14

Patent filings per year

Chart showing OIKAWA HISAOs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Telecommunications
#2 Audio-visual technology

Focus technologies

# Technology
#1 Secret communication
#2 Special information storage

Top inventors

# Name Total Patents
#1 Matsuyama Kazushige 11
#2 Ishii Takurou 2
#3 Oikawa Hisao 1

Latest patents

Publication Filing date Title
JPS57113649A Signal encryption device
JPS57113653A Signal encryption device
JPS57113648A Signal encryption device
JPS57113652A Signal encryption device
JPS57113646A Signal concealing device
JPS57113650A Signal encryption device
JPS57113647A Signal concealing device
JPS57113654A Signal encryption device
JPS57113655A Signal encryption device
JPS57113651A Signal encryption device
JPS57113404A Signal secrecy maintaining device
JPS5593119A Optical image pointer
JPS54116182A Scan converter
JPS54106145A Pluggin measuring instrument unit control information communication system