Learn more

NAT SMELTING CO LTD

Overview
  • Total Patents
    330
About

NAT SMELTING CO LTD has a total of 330 patent applications. Its first patent ever was published in 1934. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets materials and metallurgy, organic fine chemistry and environmental technology are SHANDONG BOYUAN PHARMACEUTICAL & CHEMICAL CO LTD, IMP SMELTING CORP LTD and COTE EUGENE FRANCOIS.

Patent filings in countries

World map showing NAT SMELTING CO LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 85
#2 France 67
#3 Canada 50
#4 Germany 41
#5 United States 29
#6 Belgium 19
#7 Spain 18
#8 Greece 15
#9 Austria 4
#10 Denmark 1
#11 Netherlands 1

Patent filings per year

Chart showing NAT SMELTING CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Derham Leslie Jack 30
#2 Williams George Kenneth 18
#3 Morgan Stephen William Kenneth 14
#4 Belf Leon Jerzy 12
#5 Woods Stephen Esslemont 11
#6 Robson Stanley 11
#7 Stanley Robson 10
#8 Tatlow John Colin 9
#9 Lumsden John 8
#10 Moller Leopold 7

Latest patents

Publication Filing date Title
DE1192411B Process for refining impure zinc or cadmium
US3268600A Dehalogenation of organic compounds
GB963240A Improvements in a vertical retort installation for the extraction of zinc
GB964269A Improvements in the charging system of blast furnaces
GB960279A Dehalogenation of chlorofluorocyclic compounds
GB925822A Recovery of copper compounds from lead bullion or low grade drosses
GB955157A Improvements in or relating to assessing the moisture content of granular solids
GB921632A Improvements in or relating to lead blast-furnaces
GB928467A Improvements in or relating to venturi scrubbers
GB923115A Pentafluorophenyl ketones
GB922523A Production of beryllium fluoride
GB915587A Fluorinated aromatic amino acids and amide derivatives thereof
GB922603A Pentafluorophenylurethanes
GB930466A Improvements in or relating to the treatment of arsenical drosses
GB921239A Improvements in or relating to a process for producing zinc from zinc concentrates coaining arsenic
GB923365A Pentafluorophenyl compounds
GB924369A Improvements in or relating to blast furnaces for smelting zinc
GB897579A Drive mechanism for endless travelling grates
GB947480A Improvements in or relating to the sampling of gases and liquids
GB876544A Improvements in or relating to the continuous recording of densities of fluids