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HISAO MAEDA

Overview
  • Total Patents
    14
About

HISAO MAEDA has a total of 14 patent applications. Its first patent ever was published in 1959. It filed its patents most often in United States. Its main competitors in its focus markets basic communication technologies and electrical machinery and energy are WANLASS LESLIE KENT, PSTEK CO LTD and SHANGHAI CHENGUANG MEDICAL TECH CO LTD.

Patent filings in countries

World map showing HISAO MAEDAs patent filings in countries
# Country Total Patents
#1 United States 14

Patent filings per year

Chart showing HISAO MAEDAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hisao Maeda 14

Latest patents

Publication Filing date Title
US3299280A Parametron bridge circuit utilizing ferromagnetic thin film
US3324305A Parametron
US3274506A Transistor type broad band amplifier utilizing a choke coil
US3234480A Shielded superwide-band high-frequency transistor amplifier
US3234481A High-frequency transformer assembly including shielding means for use with transistor circuitry
US3205417A Multiple ceramic variable disk capacitor
US3173080A Electric circuit having distributed constants
US3202906A Electric circuit having distributed constants
US3106691A Variable-inductance coil having core threaded in coil form
US3146418A Variable inductor
US3090907A Intermediate frequency transformer
US3092796A Intermediate frequency transformer
US3155931A Wide range variable magnetic inductor
US3060394A Radio transformer