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HILLIARD JOHN D

Overview
  • Total Patents
    14
About

HILLIARD JOHN D has a total of 14 patent applications. Its first patent ever was published in 1906. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, transport and civil engineering are LANGE EMIL, NEUMANN HOCHSPANNUNGS APP G M and CIE GENERAL DELECTRICITE.

Patent filings in countries

World map showing HILLIARD JOHN Ds patent filings in countries
# Country Total Patents
#1 United States 13
#2 Canada 1

Patent filings per year

Chart showing HILLIARD JOHN Ds patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hilliard John D 14
#2 Parsons Charles E 2

Latest patents

Publication Filing date Title
US2381592A Circuit breaker
US2232003A Circuit interrupter
US2228231A Circuit interrupter
US2140475A Circuit breaker
US2138323A Accelerated break circuit interrupter
US1262341A Salvage apparatus.
US1009748A Switching device for electrical circuits.
US1069782A Electric insulator.
US949033A Electrical switch.
CA113602A Electrical oil switch
US976654A Electrical switch.
US1001144A Preserving wooden poles.
US857062A Electrical transformer.
US914837A Line-support.