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NAT AUTOMATIC TOOL CO

Overview
  • Total Patents
    147
About

NAT AUTOMATIC TOOL CO has a total of 147 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets machine tools, machines and mechanical elements are CARLTON MACHINE TOOL CO, MELLING HERMAN W and BURGMASTER CORP.

Patent filings in countries

World map showing NAT AUTOMATIC TOOL COs patent filings in countries
# Country Total Patents
#1 United States 97
#2 United Kingdom 19
#3 France 15
#4 Germany 12
#5 Canada 4

Patent filings per year

Chart showing NAT AUTOMATIC TOOL COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Galloway Robert M 31
#2 Schafer Robert A 16
#3 Burton Paul C 6
#4 Ralph Rodal 5
#5 Bockhoff William F 5
#6 Peters Frebert J 4
#7 Sudhoff Alfred G 3
#8 Muhl Charles H 3
#9 Powell Russell W 3
#10 Norman Richard M 3

Latest patents

Publication Filing date Title
US3861091A Honing tool with guide means to prevent tool wear
US3824298A Method for remelting sprue material
US3712777A Apparatus for remelting sprue material
US3669599A Hydromechanical clamp
US3509793A Screw feed machine unit
US3456396A Automatic sizing of bores and the like
US3552069A Floating seat structure for honing machines and the like
US3501810A Pressure release check valve for pressure operated injection nozzle
US3502312A Gear hardening machine
US3466023A Side quench mechanism for induction intensifiers
US3396493A Work-sensing fixture and control system therefor
US3324602A Hydraulic honing machine
US2804752A Molding machine
US2380873A Indexing mechanism
US2377720A Hydraulic control apparatus for machine tools
US2326498A Hydropneumatic machine tool feed
US2299851A Hydraulic control apparatus for machine tools
US2249230A Work locating mechanism for machine tools
US2302878A Machine tool
US2220806A Way cleaner