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Karlstad, SE

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Patents Grantslast 30 patents

Information Patent Grant
Oxidation of copper in a copper etching solution by the use of oxyg...
- Patent number 9,920,434
- Issue date Mar 20, 2018
- Sigma Engineering AB
- Mats Andersson
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method for etching copper and recovery of the spent etching solution
- Patent number 8,236,189
- Issue date Aug 7, 2012
- Sigma Engineering AB
- Harald Ottertun
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Acrobatic rotary kite
- Patent number 4,078,746
- Issue date Mar 14, 1978
- Schneider; Harold E.
- Coy F. Harris
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
OXIDATION OF COPPER IN A COPPER ETCHING SOLUTION BY THE USE OF OXYG...
- Publication number 20170022616
- Publication date Jan 26, 2017
- SIGMA ENGINEERING AB
- Mats ANDERSSON
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
METHOD AND DEVICE FOR PACKAGING SUBSTANTIALLY FLAT PRODUCTS IN A BOX
- Publication number 20120102892
- Publication date May 3, 2012
- SIGMA ENGINEERING B.V.
- Antonius Adrianus Arnoldus Smits
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

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