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GRATHNAIL DEV CO LTD

Overview
  • Total Patents
    13
About

GRATHNAIL DEV CO LTD has a total of 13 patent applications. Its first patent ever was published in 1982. It filed its patents most often in Australia, Germany and France. Its main competitors in its focus markets civil engineering, measurement and transport are HUNAN HENGZHI ROCK DRILLING TECHNOLOGY CO LTD, SDG LLC and SONDEX PLC.

Patent filings in countries

World map showing GRATHNAIL DEV CO LTDs patent filings in countries
# Country Total Patents
#1 Australia 2
#2 Germany 2
#3 France 2
#4 United Kingdom 2
#5 United States 2
#6 Canada 1
#7 Spain 1
#8 Sweden 1

Patent filings per year

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

Focus industries

Top inventors

# Name Total Patents
#1 Howard Derik 7
#2 Le Blanc Smith Guy 3
#3 Smith Guy Le Blanc 2
#4 Goedhals Anton Beau 1
#5 Goedhals Anton B 1
#6 Howard D 1
#7 Smith Guy L B 1
#8 Blanc Smith Guy Le 1
#9 Le Blanc Smith G 1
#10 Doedhals Anton Deau 1

Latest patents

Publication Filing date Title
DE3206079A1 DEVICE FOR MONITORING PRESSURE OF A VEHICLE TIRE
GB2094375A Mining