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MARQUARDT J & J

Overview
  • Total Patents
    130
About

MARQUARDT J & J has a total of 130 patent applications. Its first patent ever was published in 1955. It filed its patents most often in Germany, United States and France. Its main competitors in its focus markets electrical machinery and energy, basic communication technologies and engines, pumps and turbines are GIGAVAC LLC, EJA ENG PLC and ZHEJIANG JIABEN ELECTRONICS CO LTD.

Patent filings in countries

World map showing MARQUARDT J & Js patent filings in countries
# Country Total Patents
#1 Germany 76
#2 United States 19
#3 France 17
#4 Italy 9
#5 Netherlands 3
#6 Switzerland 2
#7 United Kingdom 2
#8 Japan 1
#9 Sweden 1

Patent filings per year

Chart showing MARQUARDT J & Js patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Storz Werner 15
#2 Marquardt Erich 11
#3 Marquardt Erich Ing Grad 7
#4 Schaeffeler Alois 7
#5 Ueth Ewald 6
#6 Prestel Fritz 6
#7 Marquardt Ewald Dipl-Ing 5
#8 Mesle Reinhold 5
#9 Steidle Alfons 4
#10 Dignal Fritz 4

Latest patents

Publication Filing date Title
DE3028379A1 Interlocking mechanism with cammed switching dog - has guide pin on end of spring arm, forming shank of spring member, other end of which coacts with control cam
US4277661A Basic electric switch with an additional switch portion
DE2905576A1 Electric switch with thermal overload cut=out - has switch members closed by pushbutton with upper contact controlled by bimetallic element with horizontal contact arm
DE2838934A1 ELECTRIC SWITCH
DE2827356A1 Smooth starting circuit for electric motors - has semiconductor switch shunted by rc circuits whose capacitor is discharged by transistor
DE2826629A1 Half-wave control circuit for universal motors - has thyristor regulated by voltage divider and has control circuit with trigger diode and ignition capacitor
DE2820594A1 Snap action switch assembly - has helical snap action spring carrying frame with two movable contacts, controlled by operating element
DE2808766A1 Monostable contact with spring-loaded actuator - is for hand tool and has additional snap action leaf spring reaching changeover point before moving contact
DE2746696A1 Phase angle control circuit for motor - has triac with diac, RC-circuit and potentiometer allowing long supply leads
DE2741292A1 Rocker switch with two rocker levers - has slidable, spring loaded rocker in housing lid whose inside supports rocker levers
DE2740902A1 ELECTRIC SWITCH
DE2740875A1 Electric switch with two bridgeable contacts - has connecting element holding together two U=shaped leaf springs
DE2703284A1 Smooth starting circuit for electric motors - has switch in motor circuit shunted by RC element and current source circuit
JPS524087A Clamp joints without screw
US4035596A Electrical switch construction
DE2558739A1 Electrical connector joint for conductors - has terminal members passing into connector block with leaf spring retaining clips matching with wnd tages on cable
DE2558620A1 Snap action electrical switch - has leading element formed with operating element operating between cams to compress spring
DE2554471A1 Switch with thermal overcurrent release - has bimetal strip heated by switched current connecting two members biased by resetting springs
US4081632A Cam operated switch having wavy spring contact assembly abutting stop or fixed contact thereby storing kinetic energy prior to subsequent engagement with a fixed contact assembly
DE2545437A1 Half-wave control of universal motor - has thyristor between armature and winding to stabilise control voltage from voltage divider