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NAT INV S CORP

Overview
  • Total Patents
    19
About

NAT INV S CORP has a total of 19 patent applications. Its first patent ever was published in 1941. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy and machines are RANNEY PERCIVAL K, BOUCHER INV S LTD and HITACHI FERRITE ELECT LTD.

Patent filings in countries

World map showing NAT INV S CORPs patent filings in countries
# Country Total Patents
#1 United States 19

Patent filings per year

Chart showing NAT INV S CORPs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Electrical machinery and energy
#2 Machines

Top inventors

# Name Total Patents
#1 Herold Bridges John 10
#2 Philippe Boucher Charles 8
#3 August Kuhl Frederick 3
#4 Skrotzki Frederick H 1

Latest patents

Publication Filing date Title
US2637833A Lighting system and apparatus
US2611885A Fluorescent tube lighting system and apparatus
US2577733A Transformer
US2615067A Luminescent tube system and apparatus
US2481468A Luminescent tube system and apparatus
US2549288A Lighting system and apparatus
US2510209A Luminescent tube system and apparatus
US2391875A Electrical transformer apparatus
US2546968A Transformer
US2464373A Fluorescent discharge tube
US2575093A Transformer
US2436951A Luminescent tube system and apparatus
US2461029A Luminescent tube system and apparatus
US2429604A Transformer
US2428646A Luminescent tube system
US2413681A Luminescent tube system and apparatus
US2391874A Transformer apparatus
US2391873A Transformer
US2410624A Transformer apparatus