Sigma Engineering AB

Sweden

 
Total IP 4
Total IP Rank # 380,522
IP Activity Score 0/5.0    0
IP Activity Rank # 1,660,322

Patents

Trademarks

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Last Patent 2017 - Oxidation of copper in a copper ...
First Patent 2008 - A method for etching copper and ...

Latest Inventions, Goods, Services

2015 Invention Oxidation of copper in a copper etching solution by the use of oxygen and/or air as an oxidizing ...
2008 Invention Method for etching copper and recovery of the spent etching solution. 2+ forms a copper complex w...
Invention A method for etching copper and recovery of the spent etching solution. An etching and recovery m...