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WALTER DORNIG

Overview
  • Total Patents
    21
About

WALTER DORNIG has a total of 21 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets basic communication technologies, electrical machinery and energy and telecommunications are WALTER DORNIG DR, PLOHL MIROSLAV and KRUSE STORKE ELECTRONICS.

Patent filings in countries

World map showing WALTER DORNIGs patent filings in countries
# Country Total Patents
#1 United Kingdom 15
#2 United States 5
#3 Germany 1

Patent filings per year

Chart showing WALTER DORNIGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Walter Dornig 5

Latest patents

Publication Filing date Title
GB418637A Regulating device for dynamo electric machines
GB337699A Alternating current generator with modulation frequency
US1780702A Constant-speed multifrequency electrical generating apparatus
GB322347A Constant speed multi-frequency electrical generating apparatus
US1618411A Electrical frequency-multiplying system
GB241167A Improvements in electrical frequency multiplying systems, more especially for wireless signalling
GB219862A Improvements in or relating to systems for multiplying frequency by means of electric transformers
GB202277A Methods of improving the efficiency of frequency multiplying transformers
GB207781A Improvements in wireless and like signalling
US1545040A Multiplying transformer
US1545041A Circuit arrangement for frequency-multiplying transformers
GB201845A Improvements in electrical condensers
GB206074A Improvements in and relating to antennae for wireless signalling
GB203223A Improvements relating to speed regulators for electric motors
GB204558A Improvements relating to electric speed governors
GB194365A Improvements in or relating to wireless telegraphy antennae
US1587512A High-frequency transformer
GB188551A Improvements in or relating to systems for transforming the frequency of electric currents
GB189350A Improvements in or relating to electric condensers
GB189349A Improvements in or relating to high frequency transformers