Learn more

JEAN QUENEAU AUGUSTIN LEON

Overview
  • Total Patents
    18
About

JEAN QUENEAU AUGUSTIN LEON has a total of 18 patent applications. Its first patent ever was published in 1927. It filed its patents most often in United States. Its main competitors in its focus markets materials and metallurgy, chemical engineering and machines are BRADLEY FITCH COMPANY, METALS PRODUCTION LTD and METALLWERKE UNTERWESER AG.

Patent filings in countries

World map showing JEAN QUENEAU AUGUSTIN LEONs patent filings in countries
# Country Total Patents
#1 United States 18

Patent filings per year

Chart showing JEAN QUENEAU AUGUSTIN LEONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jean Queneau Augustin Leon 18

Latest patents

Publication Filing date Title
US2296402A Attrition mill
US2342368A Zinc metallurgy
US2290892A Wet magnetic separation
US2258194A Duplex electromagnetic separator device
US2177809A Apparatus for magnetically separating materials
US2154010A Electromagnetic separator device
US2075466A Method of electromagnetically separating ores
US2064495A Method and apparatus for recovering vaporized metal compounds
US2073994A Metallurgical method
US1975800A Manufacture of pressure molded refractory articles
US1905604A Process of roasting ores
US1929713A Apparatus for roasting zinc ores
US1930370A Method of roasting zinc sulphide ores
US1872169A Process for the separation of component constituents of a complex metalliferous dust
US1816743A Recovery of metals from ores
US1999209A Method of eliminating contaminating metals and metalloids from ores
US1816742A Method of producing tin
US1718378A Method of producing zinc