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KOCH & STERZEL AG

Overview
  • Total Patents
    754
About

KOCH & STERZEL AG has a total of 754 patent applications. Its first patent ever was published in 1920. It filed its patents most often in Germany, Switzerland and France. Its main competitors in its focus markets electrical machinery and energy, medical technology and measurement are INT POWER GROUP INC, JIANGYIN SPARK ELECTRONIC TECH CO LTD and TBEA HENGYANG TRANSF CO LTD.

Patent filings in countries

World map showing KOCH & STERZEL AGs patent filings in countries
# Country Total Patents
#1 Germany 585
#2 Switzerland 49
#3 France 35
#4 Austria 27
#5 United Kingdom 21
#6 United States 14
#7 Spain 13
#8 Finland 5
#9 Denmark 3
#10 Belgium 1
#11 Netherlands 1

Patent filings per year

Chart showing KOCH & STERZEL AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Beger Horst 69
#2 Sterzel Aktiengesellschaft Koc 49
#3 Noelke Dipl-Ing Otto Erich 34
#4 Fischer Franz Joseph 32
#5 Sterzel Dr-Ing Kurt August 27
#6 Raupach Friedrich 20
#7 Reiche Dr-Ing Willi 14
#8 Noelke Dr-Ing Otto Erich 12
#9 Leistner Dr Kurt 12
#10 Fischer Franz Josef 11

Latest patents

Publication Filing date Title
DE1024256B Stereo viewing apparatus, in particular for evaluating stereo x-ray recordings
DE1006252B X-ray device for making body layer images
DE967326C X-ray system with circulation cooling
DE845221C Electrode arrangement for dry testing of insulated conductors or cables
DE933477C X-ray device for the production of body layer recordings
DE941228C Method and device for measuring or checking the thickness of any body or the content of hollow bodies by means of X-rays
DE750422C Slit diaphragm for masking out an X-ray cone
DE753190C Process for the protection of lacquer or paint spraying rooms and the furnishings in them against the spray liquid settling in or on them
DE949185C Power transformer, voltage converter or test transformer for high and very high voltages
DE754657C Device for cooling the anode of X-ray tubes
DE857557C X-ray tube anode
DE746144C Device for automatic voltage regulation using two regulators
DE736041C Control device for step transformers
DE711201C Switching device for resistors or windings of electrical devices, especially for the primary windings of current transformers
DE731536C Current transformer with a multi-part insulating body
DE744214C Device for recording the maximum permissible tube current strength for X-ray apparatus with setting devices for the tube voltage and the number of milliamps
DE744944C Device for the non-destructive examination of materials or finished or semi-finished products with X-rays
DE729919C High voltage transformer
DE723131C High voltage dry transformer, especially voltage transducer
DE744147C Power converter