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COLUMBIAN CARBON

Overview
  • Total Patents
    641
About

COLUMBIAN CARBON has a total of 641 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets basic materials chemistry, materials and metallurgy and macromolecular chemistry and polymers are EVONIK DEGUSSA GMBH STAR, UNITED KINGDOM CHEMICALS LTD and EUTECO SPA.

Patent filings in countries

World map showing COLUMBIAN CARBONs patent filings in countries

Patent filings per year

Chart showing COLUMBIAN CARBONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Heller George L 63
#2 Braendle Harold A 20
#3 Sweitzer Carl W 15
#4 Clark Reginald F 14
#5 Wiegand William B 13
#6 Charles Lewis George 12
#7 Heller George Louis 11
#8 Olechowski Jerome R 10
#9 Ekholm Wesley C 9
#10 John Martin 9

Latest patents

Publication Filing date Title
PH13238A Apparatus for producing improved pellets of a powder
US3687893A Rubber compounding
US3808328A Manufacture of carbon black from feedstock oil modified with rubber
US3661882A Polymerization catalyst derived from zero-valent state metal coordination complex with group v-a compound etc.
US3607983A Process for the production of high impact strength graft polymers
US3642446A Process and apparatus for the manufacture of carbon blacks having improved dispersion and platewear characteristics
IL31348D0 Process for producing alkali metal silicates
GB1244020A Bromination of unsaturated hydrocarbons
GB1256085A Polyhaloalcohols and their use as flame retardants in polymer compositions
US3627555A Feeding of powders
GB1244192A Chromium coordination catalysts
GB1234780A Selective hydrogenation of twelve-membered carbocyclic trienes
CH513783A Selective reduction of 1,5,9-cyclo-dodecatriene to - cyclododecene and cyclododecane
CH511201A Hydrogenation of cyclododecatriene to cyclodecene
CH505769A Selective reduction of 1,5,9-cyclo-dodecatriene to - cyclododecene and cyclododecane
GB1224627A Pigment dispersions
US3511605A Defluorination of pigmentary silica
US3492863A Process and apparatus for determining the tread groove cracking tendencies of vehicle tires
US3507927A Polymerization processes employing chromium sub-halide catalysts
US3507926A Process for cyclooligomerizing conjugated dienes