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CHEN HANCHANG

Overview
  • Total Patents
    17
About

CHEN HANCHANG has a total of 17 patent applications. Its first patent ever was published in 1986. It filed its patents most often in China. Its main competitors in its focus markets environmental technology are FEDERAL NOE G BJUDZHETNOE UCHREZHDENIE VYSOKOGORNYJ GEOFIZICHESKIJ INST FGBU VGI, YUMING ZHANG and CHONGQING TONGJI AGRICULTURAL DEV CO LTD.

Patent filings in countries

World map showing CHEN HANCHANGs patent filings in countries
# Country Total Patents
#1 China 17

Patent filings per year

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

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Hanchang Chen 16
#2 Shuda Peng 1
#3 Chen Hanchang 1

Latest patents

Publication Filing date Title
CN1254741A Moisture-proof white polishing cream
CN1091394A Water drain silica and production method
CN1069245A The soda acid dissolving working system of hydrated SiO 2
CN1065051A The gas-liquid phase working system of white carbon black
CN1060447A The acidolysis method for production of hydrated SiO 2
CN1053828A A kind of liquid suspension energy saving device
CN1052834A Low-temp desulfurization method of lithopone
CN1052894A Lavatory cleaning powder
CN1052495A The dry production of lithopone
CN1039290A Magnetic suspension bearing
CN1038295A Calcium sulfate powder for coatings
CN1035755A Mosquito-repellent powder
CN1033829A Production method of granular pitch
CN1033769A Compound feather-containing foam plastics and manufacture method
CN1032918A Cotton-plastic compound foam plastics and manufacture method
CN1031813A Production method of high-pressure colloid microballoons
CN1003233B Swimming life-saving belt