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FRANZ SEIFFERT & CO AG

Overview
  • Total Patents
    19
About

FRANZ SEIFFERT & CO AG has a total of 19 patent applications. Its first patent ever was published in 1909. It filed its patents most often in Germany, United Kingdom and Austria. Its main competitors in its focus markets mechanical elements, machine tools and control are EVANS G J, KUMAGAI TEKKOSHO KK and KUNSHAN CITY ZHANGPU TOWN JIAJUHUI ELECTRONIC FACTORY.

Patent filings in countries

World map showing FRANZ SEIFFERT & CO AGs patent filings in countries
# Country Total Patents
#1 Germany 8
#2 United Kingdom 5
#3 Austria 2
#4 France 2
#5 Ireland 1
#6 United States 1

Patent filings per year

Chart showing FRANZ SEIFFERT & CO AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kropff Waldemar Von Dipl-Ing 2
#2 Schwenk Erich 1
#3 Buchholz Wilhelm 1
#4 Kropff Dipl-Ing Waldemar V 1
#5 Samland Willi 1
#6 Reichel Walter Dr-Ing 1
#7 Leppin Otto 1
#8 Wilhelm Pcuthert 1
#9 Kropff Dipl-Ing Waldemar Von 1

Latest patents

Publication Filing date Title
DE937500C Stuffing box expansion compensator
DE858916C Relieved expansion compensator for pipes
DE724078C Device for heating bodies, in particular for annealing circular weld seams
GB530872A Improvements in or relating to pipe lines
US2157564A Expansion bend
IE14786L Pipe line compensators
GB411979A Improvements in or relating to governors for operating regulators safety devices, closure members and the like
GB372418A Improvements in and relating to slide valves
GB328591A Improvements in or connected with centrifugal pumps for boiler feeding
GB232161A Improvements in or relating to sliding valves