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LOUIS FRIEDMANN

Overview
  • Total Patents
    44
About

LOUIS FRIEDMANN has a total of 44 patent applications. Its first patent ever was published in 1904. It filed its patents most often in United Kingdom, United States and France. Its main competitors in its focus markets engines, pumps and turbines, transport and thermal processes are FRIEDMANN ALEX, ROBERT GRUNDY BROOKE and HELIOS RESEARCH CORP.

Patent filings in countries

World map showing LOUIS FRIEDMANNs patent filings in countries
# Country Total Patents
#1 United Kingdom 28
#2 United States 9
#3 France 5
#4 Germany 2

Patent filings per year

Chart showing LOUIS FRIEDMANNs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Louis Friedmann 9
#2 Friedmann Louis 5
#3 Hans Deutsch 3
#4 Emanuel Blauhorn 1

Latest patents

Publication Filing date Title
GB498987A A safety device for hydraulic transmission installations
GB478785A Automatic control device for the overflow valve of injectors
GB466403A Improvements in or relating to a labyrinth packing for sliding bearings of railway vehicles
GB464630A Improvements in or relating to labyrinth packing for neck bearings
GB469164A Improvements in devices for preventing the escape of oil from railway vehicle axle boxes
GB437391A Improvements relating to the automatic control of steam heating systems
GB418563A An injector for delivering against high pressure
GB403916A Improvements in or relating to steam injectors
GB409169A Safety device for hydraulic brakes on vehicles
GB406192A Device for preventing oil from escaping from axle bearings of railway vehicles
GB385919A Lubricating arrangements for the axle bearings of railway vehicles
GB377156A Improvements in or relating to a method of and arrangement for regulating heating systems
GB345019A Improvements relating to the steam heating of railway carriages
GB343251A Boiler feed supply apparatus intended particularly for locomotives
GB333852A Feed apparatus for locomotive boilers
GB313155A Improvements relating to sieve devices
GB309996A Feed water supply apparatus for high pressure steam boilers
GB309995A Feed water supply apparatus for high pressure steam boilers
GB307503A Improvements in boiler feed water supply apparatus, intended particularly for locomotives
GB307423A Feed apparatus for locomotive boilers