Learn more

ENGELHARD IND INC

Overview
  • Total Patents
    956
About

ENGELHARD IND INC has a total of 956 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets chemical engineering, materials and metallurgy and machines are ENGELHARD IND, BATTELLE MEMORIAL INSTITUTE and SHANDONG HAIKE INNOVATION RES INSTITUTE CO LTD.

Patent filings in countries

World map showing ENGELHARD IND INCs patent filings in countries
# Country Total Patents
#1 United States 313
#2 United Kingdom 226
#3 Germany 208
#4 France 114
#5 Switzerland 43
#6 Austria 17
#7 Sweden 13
#8 Denmark 6
#9 Spain 4
#10 Norway 4
#11 Greece 2
#12 Netherlands 2
#13 Belgium 1
#14 Brazil 1
#15 Canada 1
#16 Japan 1

Patent filings per year

Chart showing ENGELHARD IND INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Keith Carl D 55
#2 Rylander Paul N 38
#3 Anderson Edward P 29
#4 Andersen Holger C 27
#5 Cohn Johann G E 25
#6 Hill James S 21
#7 Hauel Anna P 19
#8 D Keith Carl 19
#9 Pfefferle William C 14
#10 Langley Robert C 12

Latest patents

Publication Filing date Title
US3558508A Preparation of spheroidal aluminum oxide gels
ES345568A1 A procedure for selective oxidation of carbon monoxide to carbon dioxide in a gaseous mixture. (Machine-translation by Google Translate, not legally binding)
US3533851A Method for producing fuel cell electrodes
US3425803A Nitric acid tail gas purification
US3451859A Noble metal thermocouple having base metal compensating leads
US3528788A Etched metal coated diamond grains in grinding wheels
US3510157A Seal for hydrogen diffusion apparatus
US3466233A Gold plating
US3505178A Process of electroplating an article by sequentially passing the same and a platinum coated tungsten anode through a series of different electroplating baths
US3441359A Catalytic radiant heater
US3414439A Fuel cell and process of using with ruthenium-tantalum alloy catalyst
US3398504A Method of transporting hydrogen and apparatus therefor
US3437357A Seal for thin tubing
US3441382A Catalyst cartridge
US3475224A Fuel cell having catalytic fuel electrode
US3506494A Process for producing electrical energy utilizing platinum-containing catalysts
US3323882A Composite grid wire for electron tubes
US3508975A Tungsten-rhenium alloy thermocouple with compensating lead wires
US3502510A Thermocouple having tungsten-rhenium alloy leg wires
US3475192A Method of coating substrate with metallic fluoride films