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GUCHANG CO LTD

Overview
  • Total Patents
    17
About

GUCHANG CO LTD has a total of 17 patent applications. Its first patent ever was published in 1989. It filed its patents most often in China. Its main competitors in its focus markets audio-visual technology, electrical machinery and energy and telecommunications are ALMUS CORP, AKINO HIROSHI and DALI AS.

Patent filings in countries

World map showing GUCHANG CO LTDs patent filings in countries
# Country Total Patents
#1 China 17

Patent filings per year

Chart showing GUCHANG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yang Zonglong 14
#2 Zonglong Yang 1
#3 Masuta Shiro 1
#4 Kellerich Shown P 1

Latest patents

Publication Filing date Title
CN1489958A Portable neck sling
CN1445970A Earphone type handfree headphones with winder
CN1376010A Miniature loudspeaker set inside radio communication equipment
CN1320529A Outward warner of using mobile telephone on driving car
CN1274255A Earphone with dual earhooks
CN1269299A Hand-free communication system
CN1263401A Telephone switching apparatus
CN1259840A Adjustable earphone with microphone
CN1244093A Adapter for earphone and microphone
CN1244092A Storage box for coiled earphone line
CN1241105A Earware integrating earphone, microphone and ear mask
CN1207002A Connector for mobile telephone
CN1189080A Ear-plug type earphone with ear hook
CN1187101A Separable ear hook for ear plug type earphone
CN1159115A Handfree telephone converter
CN1044857A Real-time colour display device for driving speed