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FIELD EMISSION CORP

Overview
  • Total Patents
    42
About

FIELD EMISSION CORP has a total of 42 patent applications. Its first patent ever was published in 1959. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets electrical machinery and energy, medical technology and basic communication technologies are EXCILLUM AB, JULIUS EDGAR LILIENFELD DR and GEN ELECTRIC X RAY CORP.

Patent filings in countries

World map showing FIELD EMISSION CORPs patent filings in countries
# Country Total Patents
#1 United States 21
#2 United Kingdom 7
#3 Germany 6
#4 France 6
#5 Canada 2

Patent filings per year

Chart showing FIELD EMISSION CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Dyke Walter P 13
#2 Grundhauser Frank J 12
#3 Grundhauser Frank Jacob 5
#4 Dyke Walter Payne 5
#5 Barbour John P 5
#6 Brewster John L 3
#7 Charbonnier Francis M 3
#8 Trolan J Kenneth 2
#9 Martin Eugene E 2
#10 Swanson Lynwood W 2

Latest patents

Publication Filing date Title
US3783288A Pulsed vacuum arc operation of field emission x-ray tube without anode melting
US3783289A Marx surge pulser having stray capacitance which is high for input stages and low for output stages
US3483379A Automatic x-ray exposure control having a detector whose response is correlated with the x-ray absorption properties of the x-ray film
US3551677A Field reversal type pulse generator having a shorting switch in the form of a plurality of parallel spark gaps
US3406304A Electron transmission window for pulsed field emission electron radiation tube
US3428803A Apparatus for simultaneously producing x-ray and electron radiographs of the same object
US3482096A High energy field emission electron radiation pulse generator,x-ray apparatus and system employing same
US3363102A High voltage pulse transmission system employing field emission diodes for successively pulsing a load
US3374386A Field emission cathode having tungsten miller indices 100 plane coated with zirconium, hafnium or magnesium on oxygen binder
US3432663A High voltage storage module,pulse generator and system
US3301983A High voltage coaxial switch and associated apparatus
US3329816A High frequency coaxial transmission line for supporting a field emission cathode x-ray tube
US3309523A X-ray tube having field emission cathode and evaporative anode in combination with electrical pulser means
US3256439A High voltage and high current pulse generator in combination with field emission type x-ray tube
US3173006A Short pulse-high energy electron radiation tube
GB987478A Vacuum arc x-ray tube system and method
US3283203A X-ray tube temperature enhanced field emission cathode
US3259773A Vacuum arc x-ray tube
US3174043A Short pulse-high intensity vacuum arc x-ray system
US3248574A High voltage pulser