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WIENERT FRITZ OTTO

Overview
  • Total Patents
    24
About

WIENERT FRITZ OTTO has a total of 24 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets materials and metallurgy, environmental technology and machines are BUFFALO ELECTRIC FURNACE CORP, CRA SERVICES and TEKNOLODZHIKAL RESORSIZ PTI LT.

Patent filings in countries

World map showing WIENERT FRITZ OTTOs patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 7
#3 Germany 4
#4 United Kingdom 3
#5 Belgium 1

Patent filings per year

Chart showing WIENERT FRITZ OTTOs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wienert Fritz O 13
#2 Wienert Fritz Otto 6
#3 Otto Wienert Fritz 1
#4 Wienert Fritz O Roosevelt Aven 1

Latest patents

Publication Filing date Title
US4613363A Process of making silicon, iron and ferroalloys
US4419186A Process for making strong metallurgical coke
US4178349A Process for dry removal of sulfur dioxide from combustion gases
US3894865A Production of metallurgical pellets in rotary kilns
CA980576A Ferrous pellets
CA958221A Production of metallurgical pellets in rotary kilns
US3653879A Rotary reactor and method for treating melts
US3527419A Apparatus for grinding
US3653876A Ferrous pellets
US3532489A Method and apparatus for reducing metal oxides
GB1102153A Pellet manufacture and apparatus therefor
US3471093A Method for grinding
GB1000040A Improvements in or relating to the grinding of material in grinding mills
GB727680A A method and a rotary kiln for the manufacture of sponge iron
CA692175A Grinding apparatus
CA863844A Rotary reactor and method for treating melts
CA914424A Production of metallurgical pellets