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EDWARD E JOHNSON INC

Overview
  • Total Patents
    38
About

EDWARD E JOHNSON INC has a total of 38 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets civil engineering, machines and machine tools are VERNON TOOL CO LTD, SANWA SHOJI CO LTD and LORRAINE DAVID G.

Patent filings in countries

World map showing EDWARD E JOHNSON INCs patent filings in countries
# Country Total Patents
#1 United States 32
#2 Germany 3
#3 United Kingdom 2
#4 France 1

Patent filings per year

Chart showing EDWARD E JOHNSON INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Johnson Edward E 15
#2 Williams Howard O 11
#3 Jens Albert A 10
#4 Bodey Jr Charles E 2
#5 Paullus Clarence L 1
#6 Bennison Ernest W 1
#7 Bollenbach Willard M 1
#8 Marshall Bollenbach Willard 1
#9 Leonard Paullus Clarence 1

Latest patents

Publication Filing date Title
US3101526A Process for fabricating screens
US3056459A Well screen points
US2341783A Complete well screen
US2342913A Deep well screen
US2346885A Deep well screen
US2344909A Deep well screen
US2342914A Deep well screen
US2346647A Well screen
US2314477A Well screen having water contacting surfaces formed of plastic material
US2310507A Deep well screen
US2312415A Method of welding the ends of supporting rods to end fittings of well screens
US2312459A Method of making deep well screens
US2312458A Method of making deep well screens
US2327687A Method of making deep well screens
US2327686A Method of making deep well screens
US2076490A Method of forming a gravel pack about well screens in wells
US2076489A Method of providing and forming a gravel pack about well screens in wells
US2185999A Process of making screens for use in connection with oil wells
US2129428A Flat screen
US2046459A Screen for oil wells