E. Torbjorn Hartzell

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Stockholm, SE

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Patents Grantslast 30 patents

Information Patent Grant
Cemented carbide body with extra tough behavior
- Patent number 5,453,241
- Issue date Sep 26, 1995
- Sandvik AB
- Jan Akerman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Cemented carbide body with increased wear resistance
- Patent number 5,413,869
- Issue date May 9, 1995
- Sandvik AB
- E. Torbjorn Hartzell
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cemented carbide body used preferably for abrasive rock drilling an...
- Patent number 5,401,461
- Issue date Mar 28, 1995
- Sandvik AB
- E. Torbjorn Hartzell
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Cemented carbide body used preferably for abrasive rock drilling an...
- Patent number 5,286,549
- Issue date Feb 15, 1994
- Sandvik AB
- E. Torbjorn Hartzell
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Cemented carbide body with extra tough behavior
- Patent number 5,279,901
- Issue date Jan 18, 1994
- Sandvik AB
- Jan Akerman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...