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AMERICAN POTASH & CHEM CORP

Overview
  • Total Patents
    289
About

AMERICAN POTASH & CHEM CORP has a total of 289 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets materials and metallurgy, organic fine chemistry and basic materials chemistry are CALLERY CHEMICAL CO, SACCHARIN FABRIK AG VORM FAHLB and VICTOR CHEMICAL WORKS.

Patent filings in countries

World map showing AMERICAN POTASH & CHEM CORPs patent filings in countries
# Country Total Patents
#1 United States 224
#2 United Kingdom 23
#3 France 21
#4 Germany 19
#5 Belgium 1
#6 Sweden 1

Patent filings per year

Chart showing AMERICAN POTASH & CHEM CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wagner Ross I 25
#2 Stern David R 22
#3 Gale William A 20
#4 Washburn Robert M 20
#5 Ritchie Charles F 19
#6 Burg Anton B 18
#7 Allen William H 14
#8 May Frank H 14
#9 Henderson May Frank 12
#10 Black Leroy G 11

Latest patents

Publication Filing date Title
US3653847A Inhibition of sodium bicarbonate crystallization during crystallization of other materials using polyphosphates
US3654102A Method of preparing electrolytic manganese dioxide
US3510257A Process of separating rubidium from alkali metal impurities
US3556778A Ternary damping alloy
US3533942A Process for loading expanded water-solution hydrate salt particles
US3565578A Method of treating sodium tetraborate solutions
US3598715A Electrolytic cell
US3399976A Process for producing borax decahydrate crystals
US3454306A Method and apparatus for withdrawing a supersaturated solution from a container
US3513230A Compaction of potassium sulfate
US3341478A Polymeric phosphoranes, arsanes and stibanes and process for making the same
US3445492A Alkylene or arylene bis(organosilyl,germanyl or stannyl imidophosphoranes,arsanes or stibanes) and the preparation thereof
US3341477A Polymeric phosphoranes, arsanes and stibanes and process for making the same
US3450497A Process for producing boric oxide
US3512219A Injection reactor for titanium dioxide production
US3272846A Process for producing phosphinyl azides
US3297751A Process for the production of cyclic phosphonitriles
US3322682A Rare earth oxide and vanadate phosphors
US3383181A Process of halogenating a phosphate ore
GB1097947A Improvements in and relating to the manufacture of aluminium chloride