Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10203158 | Method and arrangement for feeding process gases from a suspension smelting furnace into a waste heat boiler | Jiliang Xia, Tapio Ahokainen | 2019-02-12 |
| 9322552 | Method and equipment for treating process gas | — | 2016-04-26 |
| 8837552 | Sealing device | Jiliang Xia, Tapio Ahokainen | 2014-09-16 |
| 8568022 | Method and arrangement for measuring at least one physical magnitude, such as temperature, flow or pressure of the cooling fluid flowing in an individual cooling element circuit of a cooling element in a metallurgical furnace | Lauri P. Pesonen | 2013-10-29 |
| 8480947 | Method for manufacturing a cooling element and a cooling element | Eero Hugg, Mikael Jåfs | 2013-07-09 |
| 8377513 | Method for coating a cooling element | Yrjö Leppänen | 2013-02-19 |
| 8038930 | Cooling element and method for manufacturing the same | Kai Seppälä, Jyrki Koitto | 2011-10-18 |
| 7465422 | Cooling element | Eero Hugg, Kai Seppälä | 2008-12-16 |
| 7393496 | Method and apparatus for increasing the capacity of a waste heat boiler in a metallurgic smelting furnace | Ilkka Kojo | 2008-07-01 |
| 7273510 | Arrangement and method for tapping a molten phase from a smelting furnace | — | 2007-09-25 |
| 6955140 | Method and apparatus for increasing the capacity of a waste heat boiler in a metallurgic smelting furnace | Ilkka Kojo | 2005-10-18 |
| 6953547 | Method and apparatus for feeding solid material and oxidizing gas into a suspension smelting furnace | — | 2005-10-11 |
| 6911176 | Cooling element | — | 2005-06-28 |
| 6858175 | Bottom structure for a smelting furnace | Ilkka Kojo | 2005-02-22 |
| 6797229 | Apparatus for removing dust accretions from a smelting furnace | Eero Hugg | 2004-09-28 |
| 6755890 | Method for reducing non-ferrous metal content in slag in the production of non-ferrous metals occurring in suspension smelting furnace | Pekka Hanniala, Ilkka Kojo | 2004-06-29 |
| 6742699 | Method for manufacturing a cooling element and a cooling element | Yrjö Leppänen | 2004-06-01 |
| 6641777 | Method for the manufacture of a composite cooling element for the melt zone of a metallurgical reactor and a composite cooling element manufactured by said method | Ilkka Kojo, Ari Jokilaakso | 2003-11-04 |
| 6547848 | Method for cooling the gas flow in a smelting furnace | Antti Jalonen | 2003-04-15 |
| 5772955 | Apparatus for suspension smelting | Pekka Hanniala, Erkki Krogerus, Ilkka Kojo | 1998-06-30 |
| 5565016 | Method for suspension smelting | Pekka Hanniala, Erkki Krogerus, Iikka Kojo | 1996-10-15 |
| 5492554 | Method for producing high-grade nickel matte from at least partly pyrometallurgically refined nickel-bearing raw materials | Pekka Hanniala, Olli Saarinen | 1996-02-20 |
| 5133801 | Method and apparatus for feeding reacting substances into a smelting furnace | — | 1992-07-28 |
| 4908058 | Method and apparatus for reducing dust accretions while treating gases in a smelting furnace | — | 1990-03-13 |