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DUVAL SULPHUR & POTASH COMPANY

Overview
  • Total Patents
    17
About

DUVAL SULPHUR & POTASH COMPANY has a total of 17 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United States, France and United Kingdom. Its main competitors in its focus markets chemical engineering, basic materials chemistry and machines are EGEBERG FERDINAND PEDER, CATTERMOLE ARTHUR EDWARD and ELMORE ALEXANDER STANLEY.

Patent filings in countries

World map showing DUVAL SULPHUR & POTASH COMPANYs patent filings in countries
# Country Total Patents
#1 United States 8
#2 France 3
#3 United Kingdom 3
#4 Germany 2
#5 Spain 1

Patent filings per year

Chart showing DUVAL SULPHUR & POTASH COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Mccarty James P 3
#2 Atwood George E 3
#3 Curtis Charles H 3
#4 Bourne Douglas J 2
#5 Bourne Douglas Johnston 2
#6 Taraba Bueford W 1
#7 Atwood George Elliott 1
#8 Atwood George Elliot 1
#9 Witman Richard E 1
#10 Harrison Marvin Henry 1

Latest patents

Publication Filing date Title
US3255882A Flotation froth level control
US3117734A Method and system for treating ore
US3114510A Sensing and control apparatus for classifiers
US3102854A Method of recovering molybdenite
US3026194A Potash treating process
US2935387A Compacting process for producing a granular product
ES234896A1 Procedure, with their corresponding apparatus for the concentrations of minerals in floating processes through foam (Machine-translation by Google Translate, not legally binding)
GB864529A Methods of and means for handling flotation middlings in ore concentration process
US2849287A Processes for treating langbeinite ore to obtain useful products therefrom
GB763459A Improvements in or relating to the separation of the potassium content from potassium ores
US2696912A Concentrating or separating of the values from soluble ores
GB731282A Improvements in or relating to the separation of the potassium content from potassium ores