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DURHAM DUPLEX RAZOR CO

Overview
  • Total Patents
    22
About

DURHAM DUPLEX RAZOR CO has a total of 22 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets machine tools and materials and metallurgy are BASSAT SA, LIEDTKE CHRISTA and AMERICA ISRAEL BLADES LTD.

Patent filings in countries

World map showing DURHAM DUPLEX RAZOR COs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 France 6
#3 Canada 3
#4 Austria 2
#5 Switzerland 2
#6 Germany 1

Patent filings per year

Chart showing DURHAM DUPLEX RAZOR COs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Machine tools
#2 Materials and metallurgy

Top inventors

# Name Total Patents
#1 Sheehan Thomas Cornelius 2
#2 Razor Co Durham Duplex 2
#3 Drew John Earl 1

Latest patents

Publication Filing date Title
GB370679A Improvements in safety razor
GB362794A Improvements in safety razor
GB345866A Improvements in razor blade
GB348050A Improvements in heat treating continuous metal strips
GB247466A Improvements in safety razors
GB219042A Improvements in knife grinding
DE378114C Holder for the blades of safety razors
GB150592A Improvements in safety razors
GB115012A Improvements in and relating to Razor Blades.
CA211428A Safety razor
CA262627A Razor
CA322471A Razor