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DUKE JOHN FREDERICK

Overview
  • Total Patents
    36
About

DUKE JOHN FREDERICK has a total of 36 patent applications. Its first patent ever was published in 1889. It filed its patents most often in United Kingdom, Canada and Denmark. Its main competitors in its focus markets materials and metallurgy, mechanical elements and basic materials chemistry are JIANGSU GUDE CONSTRUCTION MACHINERY CO LTD, SHANGHAI NATE AUTO STANDARD PARTS CO LTD and SUZHOU HUAFENG STAINLESS STEEL FASTENER CO LTD.

Patent filings in countries

World map showing DUKE JOHN FREDERICKs patent filings in countries
# Country Total Patents
#1 United Kingdom 25
#2 Canada 4
#3 Denmark 2
#4 Spain 2
#5 Austria 1
#6 Switzerland 1
#7 United States 1

Patent filings per year

Chart showing DUKE JOHN FREDERICKs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Duke John Frederick 33
#2 Duke John-Frederick 1

Latest patents

Publication Filing date Title
GB131769A Improvement in Pigments and in the Production of the same.
CA195149A Nut
GB112728A Improvements in or relating to Nuts.
GB111338A Improvements in Lock Nuts.
GB191115740A An Improved Metallic Alloy.
GB191113312A Improvements in Jet Propulsion Apparatus for Ships.
US1044761A Alloy.
GB191107863A Improvements in Metallic Alloys.
GB191029469A Improvements in and relating to Alloys.
GB191016177A An Improved Alloy and the Method of Manufacturing and Treating the same.
GB190812042A Improvements in Metallic Alloys
GB190412170A Improvements in and relating to Music Stands, Reading Desks, and the like.
GB190317651A Improvements in and relating to Air Ships or Vessels and the like.
GB190121738A Improvements in Alloys.
GB190022389A Improvements in the Extraction of Gold from Sea Water or other Solutions containing the same.
GB189912610A A Novel Mode of Obtaining Gold from Sea Water or other Solutions containing the same and means for the purpose.
GB189629076A Improvements in or relating to Means of Automatically Igniting Gas.
GB189626618A Improvements in the Manufacture of Mantles or Incandescing Bodies for Incandescent Gas Lamps.
GB189619675A Improvements in the Manufacture of Liquid Extracts of Coffee or other Substances and in Apparatus for the Purpose.
GB189613659A Improvements in the Manufacture of Mantles or Incandescing Bodies for Incandescent Gas Lamps.