Learn more

LJUNGSTROEM BIRGER

Overview
  • Total Patents
    83
About

LJUNGSTROEM BIRGER has a total of 83 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United Kingdom, Switzerland and Denmark. Its main competitors in its focus markets engines, pumps and turbines, electrical machinery and energy and mechanical elements are CHINA CHANG JIANG ENERGY CORP GROUP, THOMSON HOUSTON ATELIERS and STALKER DEV COMPANY.

Patent filings in countries

World map showing LJUNGSTROEM BIRGERs patent filings in countries
# Country Total Patents
#1 United Kingdom 21
#2 Switzerland 17
#3 Denmark 16
#4 United States 16
#5 Austria 11
#6 Spain 2

Patent filings per year

Chart showing LJUNGSTROEM BIRGERs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ljungstroem Birger 81
#2 Ljungstroem Fredrik 4
#3 Forsberg Erik August 3
#4 Widstroem Axel Daniel 1
#5 Erik August Forsberg 1

Latest patents

Publication Filing date Title
US1273511A Rotating field-magnet.
US1273385A Rotating field-magnet.
GB191304773A Improvements in Electric Machines having Commutators.
US999811A Electric generator, motor, and such like.
GB190806958A Improvements in and relating to Glands for Elastic Fluid Turbines, Compressors and the like.
GB190806945A Improvements in and relating to Elastic Fluid Turbines.
US913407A Shaft-packing.
US906640A Elastic-fluid turbine.
US919196A Elastic-fluid turbine.
GB190806359A Improvements in Stationary and Rotary Vane Series for Fluid Pressure Turbines.
US933379A Vane-ring for turbines.
GB190712063A Improvements in Elastic Fluid Turbines, Compressors and the like
GB190711918A Improvements in Rotating and Stationary Vane Series in Fluid Pressure Turbines.
US911663A Vane series for turbines.
US911662A Turbine.
GB190708379A Device for Automatically Balancing the Axial Pressure on Rotating Vane-carrying Parts of Elastic Fluid Turbines.
US962088A Turbine.
GB190708025A Improvements in Baffling Devices for Elastic Fluid Turbines
US908685A Radial turbine.
GB190707833A Improvements in Means for Balancing Axial Pressure on the Vane Plates of Radial Flow Turbines.