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CHANG WEI MING

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    217,608
About

CHANG WEI MING has a total of 12 patent applications. Its first patent ever was published in 1993. It filed its patents most often in Taiwan, Republic of Korea and United Kingdom. Its main competitors in its focus markets basic materials chemistry, environmental technology and organic fine chemistry are JIANGSU XINHAI PETROCHEMICAL GROUP CO LTD, GAPS TECH LLC and WELCRON HANTEC CO LTD.

Patent filings in countries

World map showing CHANG WEI MINGs patent filings in countries
# Country Total Patents
#1 Taiwan 4
#2 Republic of Korea 3
#3 United Kingdom 2
#4 United States 2
#5 Germany 1

Patent filings per year

Chart showing CHANG WEI MINGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Wei Ming 10
#2 Chang Cheng Yin 2
#3 Chang Jui Ting 1
#4 Chang Wei-Ming 1

Latest patents

Publication Filing date Title
US2020056097A1 Method of treating drilling mud with oil-based drilling fluid
KR20150088540A Method for purifying fuel oil
TW201516141A A method for dealing with recycled base oil(s) from used oil re-refined process in order to remove aromatic and sulfide
KR20100046564A Processing method for silicon carbide wafer cutting wastes and processing apparatus thereof
KR20100043668A Glycerin manufacturing method from by-product of disel oil
TW201013745A Wafer/photovoltaic panel cutting waste handling process and equipment
US2010063332A1 Glycerol (medical grade) preparation method using a by-product of a bio-diesel process
GB0816285D0 Glycerol(medical grade) preperation method using a by-product of a bio-diesel process
TW201009065A A biodiesel refining process
TW201004910A Glycerine preparation method using a by-product (medical grade) of a bio-dissel fuel process
DE4302893A1 Waste heat operated oil gas recovery plant