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HEWETT ROBERT J

Overview
  • Total Patents
    12
About

HEWETT ROBERT J has a total of 12 patent applications. Its first patent ever was published in 1910. It filed its patents most often in United States. Its main competitors in its focus markets transport are SHOECRAFT JUDSON, FERRER DALMAU ANTONIO and LUDLOW FREDERICK ARCHER.

Patent filings in countries

World map showing HEWETT ROBERT Js patent filings in countries
# Country Total Patents
#1 United States 12

Patent filings per year

Chart showing HEWETT ROBERT Js patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport

Focus technologies

# Technology
#1 Guiding railway traffic

Top inventors

# Name Total Patents
#1 Hewett Robert J 12

Latest patents

Publication Filing date Title
US1660332A Flash-light railway signaling system
US1554724A Railway signal system
US1514212A Railway signal system
US1436711A Directionally-controlled block-signal system
US1380145A Directionally-controlled signal system
US1295896A Cab signal system.
US1393443A Electric signaling system
US1237905A Railway signal system.
US1287993A Signaling device.
US1229957A Cab-signal system.
US1216231A Signaling sytem.
US1219554A Electric signaling system.