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JOHN WULFF

Overview
  • Total Patents
    18
About

JOHN WULFF has a total of 18 patent applications. Its first patent ever was published in 1940. It filed its patents most often in United States. Its main competitors in its focus markets materials and metallurgy, machines and environmental technology are KEYSTONE INVEST CORP, GRAENGES NYBY AB and ALESHIN V A.

Patent filings in countries

World map showing JOHN WULFFs patent filings in countries
# Country Total Patents
#1 United States 18

Patent filings per year

Chart showing JOHN WULFFs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 John Wulff 18

Latest patents

Publication Filing date Title
US2686117A Method for preparing refractory metal carbide
US2527611A Method of producing metal powders
US2528406A Method of making pyrophoric elements
US2373158A Brass powders
US2361443A Method of producing metal powders
US2426659A Producing electrical contact material
US2394578A Reclamation of tool steel scrap
US2356807A High-grade alloy powder production
US2368282A Steel powder
US2381024A Process of producing iron powder from cheap source material
US2354727A Metal powder
US2462045A Method of producing filters
US2371665A Process of classifying metal powders
US2359401A Metal powders
US2407862A Method of producing metal powders of high alloy content
US2381022A Iron and iron alloy powders
US2381023A Apparatus for producing iron alloy powder
US2334738A Lubricant