Learn more

JOSEPH WEIDENHOFF INC

Overview
  • Total Patents
    42
About

JOSEPH WEIDENHOFF INC has a total of 42 patent applications. Its first patent ever was published in 1928. It filed its patents most often in United States and United Kingdom. Its main competitors in its focus markets engines, pumps and turbines, measurement and machines are MARQUETTE CORP, ALLEN ELECT EQUIP and ACTRON MFG CO.

Patent filings in countries

World map showing JOSEPH WEIDENHOFF INCs patent filings in countries
# Country Total Patents
#1 United States 41
#2 United Kingdom 1

Patent filings per year

Chart showing JOSEPH WEIDENHOFF INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Haskins Butler J 21
#2 Benjamin Rozett 5
#3 Harris Vernon J 3
#4 Ernst Hedinger 2
#5 Reitherman Ralph W 2
#6 Ralph Mansfield 1
#7 Yenni William H 1
#8 Saballus John H O 1
#9 Neal Leon P 1
#10 Norman Neville R 1

Latest patents

Publication Filing date Title
US2673957A Shunt for low-voltage circuit testers
US2617063A Spark gap device
US2665408A Ignition system analyzer
US2620656A Compression checking gauge
US2597188A Low-voltage circuit tester
US2536227A Multipole magneto rotor charging block
US2570488A Engine accessory testing method and apparatus
US2594220A Adapter
US2477520A Spark gap unit
US2502398A Battery charger
US2442649A Magneto testing and indicating apparatus
US2402749A Magneto testing
US2098677A Pump testing apparatus
US2062174A Electron discharge oscillograph
US2136079A Device for feeding fluid to the motor portions of internal combustion engines
US2085227A Adjustable bracket
US2142027A Indicating means
US2085974A Lubricating device
US2136924A Lighting neon tubes
US2050530A Distributor tester