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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 6 | |
#2 | Canada | 4 | |
#3 | France | 2 |
# | Industry | |
---|---|---|
#1 | Materials and metallurgy | |
#2 | Electrical machinery and energy | |
#3 | Basic materials chemistry | |
#4 | Machines |
# | 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 |
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 |