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DSO BULGARSKI DARJAVNI

Overview
  • Total Patents
    21
About

DSO BULGARSKI DARJAVNI has a total of 21 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Germany, Australia and Czechoslovakia. Its main competitors in its focus markets transport, measurement and electrical machinery and energy are KRUPP VERKEHRSTECHNIK GMBH, AEG SCHIENENFAHRZEUGE and URBAN TRANSPORTATION DEV.

Patent filings in countries

World map showing DSO BULGARSKI DARJAVNIs patent filings in countries

Patent filings per year

Chart showing DSO BULGARSKI DARJAVNIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gaydarov Nikola Martinov 3
#2 Stefanov Swetoslav Alexandrov 2
#3 Stefanov Swetoslav A Dipl Ing 2
#4 Gajdarov Nikola Martinov Dipl 2
#5 Stanev Zvjatko Pentschev Dipl 2
#6 Popov Rumen Yordanov Dipl-Ing 2
#7 Matov Peter I Dipl Ing 2
#8 Staikov Georgi T Dipl Ing 2
#9 Borschukov Enyu G Dipl Ing 2
#10 Popov Rumen Y Dipl Ing 2

Latest patents

Publication Filing date Title
CS525185A2 Alternating-current powered control device for electrical rail vehicles
CS525085A2 Alternating-current powered converter for direct-current railway traction motors with recuperation
DE3402895A1 Device for discharging powdery and granular material from a container, in particular from a railway container truck
DE2811502A1 WHEEL SET FOR DIFFERENT TRACK WIDTHS
ES462707A1 Railroad carreton for different widths via. (Machine-translation by Google Translate, not legally binding)
AU2855577A Multi gauge bogie
DE2739670A1 SWIVEL BASE FOR DIFFERENT GAUGE WIDTHS
DE2339792A1 Pressure gauge for rail vehicles - is manually operated, cheap and portable and is for wheel to rail use
CH557532A Rail vehicle track pressure measurement - is by lever operated dial gauge on U-bracket lifted by turning eccentric pin
ATA679473A Device for measuring the wheel load of a railway vehicle on the track
DE2332212A1 PROCEDURE AND SYSTEM FOR PERFORMANCE OF IMPACT TESTS, IN PARTICULAR ON WAGONS