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WELLS DONALD H

Overview
  • Total Patents
    17
About

WELLS DONALD H has a total of 17 patent applications. Its first patent ever was published in 1934. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets telecommunications, chemical engineering and basic communication technologies are THOMPSON JAMES E, XUZHOU SAINUO FILTER TECH CO LTD and CHARLES SAMUEL GARLAND.

Patent filings in countries

World map showing WELLS DONALD Hs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 4
#3 Germany 2

Patent filings per year

Chart showing WELLS DONALD Hs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Wells Donald H 16
#2 H Wells Donald 1

Latest patents

Publication Filing date Title
US5083136A Transmission line coupling device with closed impedance matching loop
US4935746A Efficiency monitoring antenna
US4999642A Transmission line coupling device with closed impedance matching loop
US5179387A Whip antenna operable without grounding
CA1301865C Transmission line coupling device
US4829311A High impedance, base loaded, whip antenna
US4360814A Antenna loading device with series connected loading coils
US4280129A Variable mutual transductance tuned antenna
DE2844106A1 HF tuned aerial with variable magnetic coupling and line impedance - uses flexible rod with knob at one end and nut holding insulating tube at other
US2298321A Filter
US2103572A Filter
US2064511A Apparatus for filtering solids from liquids
US2064510A Filter
CA823329A Antenna