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PERMUTIT CO

Overview
  • Total Patents
    341
About

PERMUTIT CO has a total of 341 patent applications. Its first patent ever was published in 1913. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets environmental technology, chemical engineering and machines are ECOWATER SYSTEMS INC, WATER TECHNOLOGIES LTD and CDG TECHNOLOGY INC.

Patent filings in countries

World map showing PERMUTIT COs patent filings in countries
# Country Total Patents
#1 United States 237
#2 Canada 67
#3 United Kingdom 30
#4 Germany 4
#5 France 3

Patent filings per year

Chart showing PERMUTIT COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Eric Pick 37
#2 Pick Eric 14
#3 Otto Liebknecht 14
#4 Tiger Howard L 12
#5 Ray Riley 10
#6 Liebknecht Otto 9
#7 Heinrich Kriegsheim 9
#8 William Vaughan 8
#9 Kriegsheim Heinrich 7
#10 Goetz Paul C 7

Latest patents

Publication Filing date Title
US4990245A Sequence controller system for regenerating water treatment units
US4589971A Moisture analyzer
CA1093228A Preparation of clear, dilute lime solution by ion exchange
US3933631A Method of operating ion exchange system
US3869903A Settling rate tester
GB824220A Improvements relating to the desalting of solutions containing electrolytes
GB866511A Production of water-insoluble, highly basic anion exchange resins from epihalohydrins and alkylenepolyamines
US2810692A Ion exchange apparatus and method of operating same
US2788330A Anion exchange resins from cross-liked halogenated polyvinylaromatic polymers
US2788331A Anion exchange resins from cross-linked halogenated polyvinylaromatic polymers
US2801224A Quaternary ammonium anion exchange resins and method for preparing the same
US2741327A Water deaerating apparatus
US2801223A Novel anion exchange resins from vinyl, alkyl, ring-containing-nitrogen-carbon-heterocyclic polymers and process for producing the same
US2702795A Anion exchange resin restoration process
US2801222A Anion exchange resins containing keto groups
US2680714A Water treating apparatus
US2711995A Method and apparatus for controlling water conditioning
US2671524A Water deaerating
US2774732A Operation of cation exchange units
US2628194A Process of and apparatus for regenerating ion exchangers