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E H RESEARCH LAB INC

Overview
  • Total Patents
    12
About

E H RESEARCH LAB INC has a total of 12 patent applications. Its first patent ever was published in 1966. It filed its patents most often in United States. Its main competitors in its focus markets measurement, basic communication technologies and machines are ANACHIP CORP, ZENSHIN TEST CO and SAKATA HIROSHI.

Patent filings in countries

World map showing E H RESEARCH LAB INCs patent filings in countries
# Country Total Patents
#1 United States 12

Patent filings per year

Chart showing E H RESEARCH LAB INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Worcester John L 4
#2 Bjerke Arthur E 2
#3 Hubbs John C 2
#4 Stinson Willis D Jr 2
#5 Day John D Allen 1
#6 Wilson Garth H 1
#7 Goodale Paul E 1
#8 Castanera Thomas E 1

Latest patents

Publication Filing date Title
US4045735A Apparatus for testing electronic devices having a high density array of pin leads
US4012099A Zero insertion force socket
US3597682A Programmable testing unit for single shot testing
US3529235A Magnetic induction spectrometer employing a pair of coupled resonant cavities
US3528007A Single-shot strobing voltmeter
US3544813A Time to height converter
US3491312A Sweep oscillator having a substantially constant output power level
US3513417A Microwave attenuator with nondistributed type resistors
US3489925A Pulse generator with variable pulse width
US3443232A Pulse forming circuit
US3423601A Pulse testing apparatus for testing a device with current pulses
US3517346A Pulse generator circuit