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FARBENFABRIKEN ELBERFELD CO

Overview
  • Total Patents
    125
About

FARBENFABRIKEN ELBERFELD CO has a total of 125 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United States. Its main competitors in its focus markets basic materials chemistry, organic fine chemistry and optics are ANHUI QINGKE RUIJIE NEW MAT CO LTD, JIANGSU DAOBO CHEMICAL CO LTD and SYNTHETIC PATENTS CO INC.

Patent filings in countries

World map showing FARBENFABRIKEN ELBERFELD COs patent filings in countries
# Country Total Patents
#1 United States 125

Patent filings per year

Chart showing FARBENFABRIKEN ELBERFELD COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Eichengruen Arthur 18
#2 Schmidt Robert E 15
#3 Kahn Myrtil 12
#4 Israel Adolf 12
#5 Kothe Richard 11
#6 Engelmann Max 9
#7 Hofmann Fritz 8
#8 Kugel Max 6
#9 Becker Theodor 5
#10 Tust Paul 5

Latest patents

Publication Filing date Title
US839569A Iodin preparation.
US809362A Process of making dialkyl-barbituric acids.
US808762A Yellow anthracene dye.
US812599A Yellow-green anthraquinone dye.
US812684A Green anthraquinone dye.
US808747A Beta-substituted ester of diaminoglycerin and process of making same.
US808748A Benzoyl chlorid derivative of beta-ethyltetramethyldiaminoglycerin.
US812028A Flash-light composition.
US801418A Anthraquinone dye.
US795869A Thiazol sulfonic acid.
US794568A New azo dye.
US791526A Yellow tetrazo dye.
US791525A Yellow dye.
US791524A Yellow dye.
US789902A Process of making dialkyl barbituric acid.
US790079A Alizarin dye.
US792600A Reddish azo dye.
US787360A Process of making dialkyl-barbituric acid.
US792886A Process of making dialkyl barbituric acids.
US794982A Monoglycol ester of salicylic acid.