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KOIZUMI ISAMU

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    234,322
About

KOIZUMI ISAMU has a total of 12 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets audio-visual technology and telecommunications are SHENZHEN YINWOSHI TECH CO LTD, SECTIO AUREA AS and ELMEDYB THOMAS BO.

Patent filings in countries

World map showing KOIZUMI ISAMUs patent filings in countries

Patent filings per year

Chart showing KOIZUMI ISAMUs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Koizumi Isamu 12

Latest patents

Publication Filing date Title
JP2017103604A Front localization telephone receiver and front localization supporting mounting fixture of receiver
WO2013005775A1 Receiver and transmitter/receiver
JP2013017150A Earpiece for canal type receiver, canal type receiver using the same, stethoscope using canal type receiver and hearing aid
JP2013017149A Hearing aid using sound field receiver
JP2005117594A Headphone device for reproducing stereophonic sound
JP2003235814A Sphygmomanometer for minimum blood pressure setting system
JPS59151936A Quantitative autonomic nurve function examination apparatus by head variation
JPS5141502A 4 channeruhetsudofuonyoanpu no hoho
JPS5141501A 2 channeruhetsudofuonyoanpuno hoho