Learn more

DUFFIELD FREDERICK PTY LTD

Overview
  • Total Patents
    34
About

DUFFIELD FREDERICK PTY LTD has a total of 34 patent applications. Its first patent ever was published in 1977. It filed its patents most often in Australia, United Kingdom and South Africa. Its main competitors in its focus markets mechanical elements and machine tools are MIRAPURO KK, SIDGMAN SAITUA RENE EDUARDO and PUSPAS ARMATUREN GMBH.

Patent filings in countries

World map showing DUFFIELD FREDERICK PTY LTDs patent filings in countries
# Country Total Patents
#1 Australia 12
#2 United Kingdom 9
#3 South Africa 9
#4 Singapore 3
#5 United States 1

Patent filings per year

Chart showing DUFFIELD FREDERICK PTY LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Duffield Frederick Russell 16
#2 Taken Colin James 13
#3 Colin James Taken 3
#4 Duffield Frederick Russel 3
#5 Frederick Russel Duffield 3
#6 Fahey John Mahon 3
#7 Duffield F R 2
#8 Taken C J 1
#9 Frederick Russell Duffield 1
#10 Harvey C H 1

Latest patents

Publication Filing date Title
AU650354B2 Travelling vice
GB9006353D0 Hose end fitting
AU5209490A Hose end fitting
AU3673489A Hose end fitting for very high pressure hoses
ZA8904696B Hose end fitting for very high pressure hoses
ZA8904695B Hose coupling component
AU3673589A Hose coupling component
GB8808021D0 Hose end fitting
AU1419088A Hose end fitting
ZA8505134B Hose coupling
AU4209985A Hose coupling
GB8412943D0 Hose paring tool
AU2800984A Paring tool
GB8318445D0 Paring tool
AU1591483A Paring tool for hoses
ZA8106203B Swaged-type hose end fitting for thick-walled hose
US4400021A Reusable type hose end fitting
AU4438279A Rotatable work table with heating unit
AU3519478A Hose connector
AU3295778A Hose connector