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DOERRENHAUS FA WILHELM

Overview
  • Total Patents
    14
About

DOERRENHAUS FA WILHELM has a total of 14 patent applications. Its first patent ever was published in 1940. It filed its patents most often in Germany, EPO (European Patent Office) and Finland. Its main competitors in its focus markets civil engineering are YAO MINGCHENG, DENY SECURITY and FRANZ SCHNEIDER BRAKEL GMBH CO KG.

Patent filings in countries

World map showing DOERRENHAUS FA WILHELMs patent filings in countries
# Country Total Patents
#1 Germany 11
#2 EPO (European Patent Office) 2
#3 Finland 1

Patent filings per year

Chart showing DOERRENHAUS FA WILHELMs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

Top inventors

# Name Total Patents
#1 Pingsmann Willi 6
#2 Doerrenhaus Fritz 5
#3 Gabert Erich 4
#4 Kruse Gerald 2
#5 Doerrenhaus Dietger 2
#6 Wienert Dieter 1
#7 Wienert Dieter Dipl-Ing 1
#8 Doerrenhaus Friedrich 1
#9 Rottmann Hugo 1
#10 Abend Klaus 1

Latest patents

Publication Filing date Title
DE4340537A1 Anti-panic hotel lock
EP0280755A1 Electrical or electronic door lock, especially a mortise lock
DE2946933A1 Wooden door security striking plate - has full length fish-plate forming box cavity, with screw holes and fixing claw
DE2804603A1 Impact proof door lock with bolt and tumbler - has blocking abutment rigidly connecting locked bolt to lock case
DE2601774A1 Armoured mortice lock for doors - has armoured side plate and thickened locking bolt preventing unauthorised opening
DE2158405A1 POCKET LOCK
DE2158406A1 POCKET LOCK
DE2058708A1 Mortise door lock
DE2057919A1 Mortise door lock
DE740578C Kettel, raids or the like.