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WESTON DAVID

Overview
  • Total Patents
    125
About

WESTON DAVID has a total of 125 patent applications. Its first patent ever was published in 1947. It filed its patents most often in Canada, United Kingdom and United States. Its main competitors in its focus markets chemical engineering, materials and metallurgy and machines are FAHRENWALD ARTHUR W, Metso Outotec Finland Oy and WESTON D.

Patent filings in countries

World map showing WESTON DAVIDs patent filings in countries

Patent filings per year

Chart showing WESTON DAVIDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Weston David 84
#2 David Weston 4
#3 Daniel Stewart W 2
#4 Macpherson Arthur R 1
#5 Thomas Roger D 1
#6 Huculak John C 1

Latest patents

Publication Filing date Title
US2008125761A1 Ophthalmic surgical console system
CA1234478A Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites, bauxitic clays, kaolinitic clays and mixtures thereof
US4699770A Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites, bauxitic clays, kaolinitic clays and mixtures thereof
IE832284L Production of aluminium monochloride and aluminium metal.
CA1202470A Production of a purified alumina-silica product and substantially pure aluminum trichloride from bauxites and clays
CA1202469A Production of aluminum chlorides from bauxites and clays
CA1202471A Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites and clays
ZA8306510B Production of a purified aluminum monochloride from alumina bauxites and clays and the subsequent production of aluminum metal
US4536212A Production of a purified aluminum monochloride from alumina, bauxites and clays and the subsequent production of aluminum metal
US4437887A Production of aluminum metal from alumina bauxites and clays by firstly producing a purified aluminum monochloride
US4425310A Production of aluminum chlorides from bauxites and clays
US4425311A Production of a purified alumina-silica product and substantially pure aluminum trichloride from bauxites and clays
CA1174055A Cyanidation of gold ores
US3964997A Concentration of gold, sulphide minerals and uranium oxide minerals by flotation from ores and metallurgical plant products
CA1026877A Flotation of gold, gold bearing minerals and uranium oxides from ores and metallurgical plant products
ZM2374A1 Recovery of copper values by sulphuric acid leaching
CA1015870A Flotation of sulphide minerals from sulphide bearing ores
US3919079A Flotation of sulphide minerals from sulphide bearing ore
CA978749A Extraction of copper values by sulphuric acid leaching
US3901450A Flotation with xanthate