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POLYTECHNIC RES & DEV CO INC

Overview
  • Total Patents
    14
About

POLYTECHNIC RES & DEV CO INC has a total of 14 patent applications. Its first patent ever was published in 1951. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets basic communication technologies, measurement and electrical machinery and energy are TSIRONIS CHRISTOS, RACAL INSTRUMENTS LTD and KORBASHOV JURY MIKHAILOVICH.

Patent filings in countries

World map showing POLYTECHNIC RES & DEV CO INCs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Germany 2
#3 United Kingdom 1

Patent filings per year

Chart showing POLYTECHNIC RES & DEV CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Samuel Hopfer 3
#2 Johnson Stanley A 3
#3 Hopfer Samuel 2
#4 Finke Herbert A 2
#5 Berger Christian D 2
#6 Sid Deutsch 2
#7 Lebowitz Robert A 1
#8 Alger Ferris E 1

Latest patents

Publication Filing date Title
DE1117666B Device for generating molecular beams for maser
DE1108800B Measuring device for microwave power
US2949881A Temperature-compensating indicators
US2912957A Interpolating indicators
GB816066A Improvements relating to t-junction standing wave indicator
US2933705A Thermistor mounts
US3019386A T-junction standing wave indicator
US2710383A Standing wave indicator
US2816523A Apparatus for vacuum coating electrical resistors
US2778941A Wide range oscillator
US2798161A Radio wave combination tuners
US2788447A Radio wave tuners
US2771548A Receiver tunable over v. h. f. and u. h. f. television bands
US2772355A Wide range tuner