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PRATT JOHNS CO

Overview
  • Total Patents
    68
About

PRATT JOHNS CO has a total of 68 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, transport and machines are JUNG ALBRECHT, PERKINS ELECTRIC SWITCH MFG CO and VERNON HOPE.

Patent filings in countries

World map showing PRATT JOHNS COs patent filings in countries
# Country Total Patents
#1 United States 68

Patent filings per year

Chart showing PRATT JOHNS COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cole Robert C 39
#2 Hooker Duncan C 8
#3 Sachs Joseph 8
#4 Kempton Willard H 5
#5 Cole Robert Charles 2
#6 Cole Robert Chas 1
#7 Alvord Elliot Landon 1
#8 Mueller Henry N 1
#9 Williams Harry R 1
#10 Roberts Edward E 1

Latest patents

Publication Filing date Title
US1490943A Screw-plug fuse
US1407785A Electric safety fuse
US1400661A Inclosed fuse
US1396731A Cartridge-fuse
US1400660A Renewable fuse
US1351203A Plug-cut-out base
US1295168A Knock-out for electrical boxes.
US1287451A Electrical cut-out.
US1277045A Electric-fuse link.
US1277044A Inclosed electric fuse.
US1275391A Cut-out.
US1273151A Electrical cut-out.
US1244589A Inclosed electric fuse.
US1234133A Box-fastening.
US1227752A Fusible element for inclosed electrical fuses.
US1227753A Fuse-block.
US1235555A Inclosed electric fuse.
US1234544A Fuse-block.
US1213777A Inclosed-fuse element.
US1180397A Wire-clamp.