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BOYSEN FRIEDRICH

Overview
  • Total Patents
    20
About

BOYSEN FRIEDRICH has a total of 20 patent applications. Its first patent ever was published in 1948. It filed its patents most often in Germany, Canada and Switzerland. Its main competitors in its focus markets environmental technology, transport and mechanical elements are DEVIL, JUN B L CO LTD and MAROCCO GREGORY M.

Patent filings in countries

World map showing BOYSEN FRIEDRICHs patent filings in countries
# Country Total Patents
#1 Germany 18
#2 Canada 1
#3 Switzerland 1

Patent filings per year

Chart showing BOYSEN FRIEDRICHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Boysen Friedrich 12
#2 Friedrich Boysen 2
#3 Kurt Grasmann Dipl-Ing 2
#4 Karl Dipl-Ing 1
#5 Enrique Santiago 1
#6 Geb Wolke Elisabeth Boysen 1
#7 Karl Horstmann Dipl-Ing 1
#8 Andres Santiago-Fernandez 1
#9 Kern Herbert Dipl-Ing 1
#10 A Boysen Friedrich 1

Latest patents

Publication Filing date Title
DE2060638A1 Method for producing a pipe connection and application of the pipe connection to an exhaust system
DE1933339A1 Device on absorption sound absorbers
DE1910110A1 Device for the catalytic reaction in internal combustion engines
DE1751520A1 Exhaust silencer system, especially for multi-disc rotary piston engines
DE1751177A1 Pipe insert for exhaust silencer
DE1751059A1 Exhaust gas cooling system combined with a silencer for internal combustion engines
DE1601453A1 Combined with a heat exchanger for a heating system exhaust system of internal combustion engines, especially for motor vehicles
DE1576755A1 Exhaust silencer
DE1576754A1 Exhaust silencer, especially for rotary piston engines
DE1576753A1 Exhaust and silencer system
DE1630204A1 Device on trunk compartments of motor vehicles
DE1630102A1 Device on trunk compartments of motor vehicles
DE1475606A1 Holding device for supporting a rod-shaped part in pipes through which the flow passes, in particular a sound absorber
DE1292670B Exhaust system for internal combustion engines with two rows of cylinders
DE1430502A1 Exhaust heating for motor vehicles
DE1297114B Device for the catalytic post-combustion of combustible components in the exhaust gases of internal combustion engines
DE849829C Device for liquid container
DE840952C Suspension of the structure of prams or the like on the chassis
CA28674A Land roller or clod crusher