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SJELDNE JORDARTER FORSKNING

Overview
  • Total Patents
    29
About

SJELDNE JORDARTER FORSKNING has a total of 29 patent applications. Its first patent ever was published in 1971. It filed its patents most often in Norway, Germany and France. Its main competitors in its focus markets materials and metallurgy, chemical engineering and environmental technology are ALCOA AUSTRALIA, ALTECH CHEMICALS AUSTRALIA PTY LTD and CHARLES SEAILLES JEAN.

Patent filings in countries

World map showing SJELDNE JORDARTER FORSKNINGs patent filings in countries
# Country Total Patents
#1 Norway 6
#2 Germany 5
#3 France 5
#4 United States 4
#5 United Kingdom 3
#6 Japan 3
#7 Netherlands 3

Patent filings per year

Chart showing SJELDNE JORDARTER FORSKNINGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gjelsvik Norvald 5
#2 Hannestad G 4
#3 Hundere I 3
#4 Gaudernack B 3
#5 Farbu Leif 2
#6 Hannestad Gunnar Dipl Ing 2
#7 Dugan Martin 2
#8 Alstad Jorolf 2
#9 Gunnaa Hanesutatsuto 1
#10 Hundere Ingleiv Dipl Ing 1

Latest patents

Publication Filing date Title
DE2940657A1 MIXER SEPARATOR FOR LIQUID-LIQUID EXTRACTION
NO781307L PROCEDURE FOR THE PREPARATION OF EXTERNAL OXIDE WITH SPECIAL LARGE PARTICLES
US4041125A Process for separation of the lanthanides
NL7507699A Device for multi-stage countercurrent extraction of dissolved material from a first liquid phase to a second non-mixable liquid phase.
DE2428952A1 PROCESS FOR SEPARATION OF ELEMENTS OF THE RARE EARTH FROM THEIR MIXTURES BY MEANS OF LIQUID-LIQUID EXTRACTION
DE2302581A1 Liquid-liquid extraction process - for sepg yttrium values from the lanthanides