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SIMPSON FREDERICK G

Overview
  • Total Patents
    12
About

SIMPSON FREDERICK G has a total of 12 patent applications. Its first patent ever was published in 1913. It filed its patents most often in United States and Canada. Its main competitors in its focus markets basic communication technologies, digital networks and electrical machinery and energy are KRUSE STORKE ELECTRONICS, PLOHL MIROSLAV and PEDER OLUF PEDERSEN.

Patent filings in countries

World map showing SIMPSON FREDERICK Gs patent filings in countries
# Country Total Patents
#1 United States 9
#2 Canada 3

Patent filings per year

Chart showing SIMPSON FREDERICK Gs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Simpson Frederick G 12

Latest patents

Publication Filing date Title
CA172543A Radio telegraph and telephone system
CA172542A Radio telegraph and telephone apparatus
CA171869A Electric spark gap
US1217517A Radio telegraph and telephone system.
US1199213A Transmitting apparatus for wireless-telegraph stations.
US1222567A Transmitting apparatus for wireless-telegraph stations.
US1217516A Transmitting apparatus for wireless-telegraph stations.
US1203064A Transmitting apparatus for wireless telegraph and telephone systems.
US1163568A Electric spark-gap.
US1239831A Wireless telegraphy.
US1189881A Wireless telegraphy.
US1211770A Micromagnetic detector.