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TROLLHATTANS ELEKTROTHERMISKA

Overview
  • Total Patents
    12
About

TROLLHATTANS ELEKTROTHERMISKA has a total of 12 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets materials and metallurgy, electrical machinery and energy and basic materials chemistry are METALLURG LAB INC, EXXARO RESOURCES LTD and OGG WILLIAM A.

Patent filings in countries

World map showing TROLLHATTANS ELEKTROTHERMISKAs patent filings in countries
# Country Total Patents
#1 United States 6
#2 Canada 4
#3 France 2

Patent filings per year

Chart showing TROLLHATTANS ELEKTROTHERMISKAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Fridtjof Andersen 3
#2 Johansson Edvin Andreas 2
#3 Andersen Fridtjof 2
#4 Julius Eklund Gustaf 1
#5 Salomon Berglund Edward 1
#6 Anders Wennergren Folke Jarl 1
#7 Andeas Johansson Edvin 1
#8 Eklund Hustaf Julius 1
#9 Andreas Johansson Edvin 1

Latest patents

Publication Filing date Title
US1548972A Method of eliquating zinc
US1576621A Electric rotating resistance furnace
US1510071A Apparatus for producing zinc powder
US1495077A Method of and apparatus for extracting zinc from its ore
US1513307A Method for refining lead
US1436174A Device for putting pipe conduits for gas in and out of connection with one another
CA218965A Device for placing pipe conduits for gas
CA256831A Apparatus for the eliquation of zinc
CA230923A Method of extracting zinc from ores
CA275133A Electric furnace