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PPG IND CANADA LTD

Overview
  • Total Patents
    50
About

PPG IND CANADA LTD has a total of 50 patent applications. Its first patent ever was published in 1975. It filed its patents most often in Canada, United States and United Kingdom. Its main competitors in its focus markets civil engineering, materials and metallurgy and chemical engineering are SOLVAY CHEMICALS INC, LIYONG LU and ERGA OLAV.

Patent filings in countries

World map showing PPG IND CANADA LTDs patent filings in countries
# Country Total Patents
#1 Canada 17
#2 United States 15
#3 United Kingdom 7
#4 Germany 6
#5 France 5

Patent filings per year

Chart showing PPG IND CANADA LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Geesen Donald H 12
#2 Goldsmith Elmar L 8
#3 Edmonds Byron P 4
#4 Thompson Robert E 4
#5 Haugrud Brett G 3
#6 Goldsmith Elmar Leroy 2
#7 Porter Selby W 2
#8 Helvenston Edward P 2
#9 Willett Boyd R 2
#10 Antemuik Henry A 2

Latest patents

Publication Filing date Title
US4536418A Method for treating potash with anticaking agent
GB2080779A Process for purifying potassium chloride particles
US4276117A Process of treating potassium chloride brine by evaporation and crystallization
CA1140039A Process of treating potassium chloride brine by evaporation and crystallization
US4290650A Subterranean cavity chimney development for connecting solution mined cavities
US4264104A Rubble mining
US4284306A Apparatus and method of mining subterranean rubble piles
CA1145115A Method of recovering slurry mother liquor in the recovery of salts from aqueous solutions
US4386936A Production of potassium chloride using pond crystallization
US4239287A Solution mining potassium chloride from heated subterranean cavities
US4231840A Method of concentrating an aqueous solution by multiple effect evaporating
US4239288A Solution mining method utilizing sub-surface aquifer
FR2411158A1 PROCESS FOR PURIFYING CRYSTALLINE POTASSIUM CHLORIDE
CA1144737A Process for purifying crystalline potassium chloride
US4192555A Method of disposing solid sodium chloride while selectively solution mining potassium chloride
US4224036A Method of concentrating salt solutions
US4224035A Method of separating salts from solution
US4224037A Method for operating multiple effect evaporators
GB1538985A Low viscosity anticaking composition and method of preparing and using same
US4007964A Preferential solution mining process