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YORKSHIRE IMP METALS LTD

Overview
  • Total Patents
    38
About

YORKSHIRE IMP METALS LTD has a total of 38 patent applications. Its first patent ever was published in 1958. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets machine tools, thermal processes and materials and metallurgy are HEAT EXCHANGERS AFRICA LTD, CALUMET & HECLA CORP and CALUMET & HECLA.

Patent filings in countries

World map showing YORKSHIRE IMP METALS LTDs patent filings in countries

Patent filings per year

Chart showing YORKSHIRE IMP METALS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cairns John Harper 6
#2 Hardwick Roy 4
#3 Harper Cairns John 3
#4 Condliffe Daniel Francis 2
#5 Holloway William James 2
#6 Cairns John H 2
#7 Moore William 2
#8 Nicholls James 1
#9 Hunter Gerald William 1
#10 John Berry David 1

Latest patents

Publication Filing date Title
GB1285511A Explosively welded joints
GB1270641A Improvements in or relating to pen recorders
GB1287779A Screw-threaded nuts
GB1278951A Pipe couplings
DE1927184A1 Heat exchanger
GB1144334A Improvements in or relating to copper nickel alloys
GB1151698A Expansion Joint
GB1109915A Inspection fitting for pipework
GB1149387A Improvements in securing tubes into tube plates
GB1123836A Improvements in securing tubes into tubeplates
US3196659A Method of extrusion of metals of hollow section
GB1025643A Improvements in or relating to the extrusion of metals
GB1040884A Improvements in or relating to copper rich alloys
GB963279A Improvements in or relating to extrusion of metals of hollow section
GB924758A Improvements in moulds for continuous casting
GB920618A Combined fluid flow control and bleed valve
GB902810A Extrusion apparatus
CA866506A Securing tubes into tube plates
CA583147A Methods and apparatus for making branched pipe fittings