Bengt Hedberg

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Goteborg, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing concrete structures with a surface protection a...
- Patent number 5,797,238
- Issue date Aug 25, 1998
- Delcon AB Concrete Development
- Leif Berntsson
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Stabilization of extremely lightweight aggregate concrete
- Patent number 4,895,598
- Issue date Jan 23, 1990
- Bengt Hedberg
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method of producing a cement mortar with good stability in a fresh...
- Patent number 4,157,998
- Issue date Jun 12, 1979
- AB Bofors
- Leif Berntsson
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES