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CHEN RENFU

Overview
  • Total Patents
    13
About

CHEN RENFU has a total of 13 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 environmental technology, packaging and shipping and textiles and paper are CHEN JEN HUI, ROSEN KARL and ROSEN K I J.

Patent filings in countries

World map showing CHEN RENFUs patent filings in countries
# Country Total Patents
#1 China 13

Patent filings per year

Chart showing CHEN RENFUs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chen Renfu 11
#2 Renfu Chen 2

Latest patents

Publication Filing date Title
CN102839842A Method for store water by use of geographical features of stony desertification region and water storage structure
CN102835203A Stony desertization management method utilizing stony desertized area geographical characteristics
CN1647883A Device for realizing soft switching while welder no-load and light load for inverse welder
CN1525144A Sensing checking apparatus capable of detecting the state in container
CN1521905A Multi-level expansible electrical connecting device
CN1508911A Coincidental socket
CN1506964A Vides and audio playback machine with automatic disc-taking function
CN1503388A Zinc fuel battery
CN1488558A Pressure-reducing container
CN1346806A Antibacterial haydite and its preparing process
CN1312407A Yarn feeding method and feeder
CN1076909A Yarn feeding wheel
CN1040235A Synchronous yarn feeding device