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POLYTECHNIC RES AND DEV COMPAN

Overview
  • Total Patents
    12
About

POLYTECHNIC RES AND DEV COMPAN has a total of 12 patent applications. Its first patent ever was published in 1947. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets measurement, electrical machinery and energy and telecommunications are HUGH SUTHERLAND MACADIE, KD ELEKTROIZMERIT PRIBOROV and KOUKEN COMPANY LTD.

Patent filings in countries

World map showing POLYTECHNIC RES AND DEV COMPANs patent filings in countries
# Country Total Patents
#1 United States 8
#2 Germany 2
#3 United Kingdom 2

Patent filings per year

Chart showing POLYTECHNIC RES AND DEV COMPANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Finke Herbert A 4
#2 Johnson Stanley A 3
#3 Gaffney Francis J 3
#4 Hopfer Samuel 2
#5 Waller William E 2
#6 Arnold Finke Herbert 1
#7 Ebert John E 1
#8 Melvin Goodhue William 1
#9 Henry Sonnenschein Abraham 1

Latest patents

Publication Filing date Title
GB801005A An improved method of cutting linear gaps in metallic films
GB785623A Improvements relating to standing wave indicator
DE1023141B Device for testing standing waves
DE1005631B Bolometer for measuring the high frequency power in coaxial power transmission lines
US2748276A Shielded-line tunable resonator
US2667618A Bolometer for coaxial transmission lines
US2752494A Wide range resonator
US2650347A Impedance measuring bridge
US2644889A Mode suppressor for external cavity klystron oscillators
US2597081A Joint for wave guides
US2666904A Microwave frequency meter
US2553910A Selective signaling system