Inventor
E. Torbjorn Hartzell
Inventor
Stockholm, SE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys24%
E21BEarth or rock drilling20%
Y10TTechnical subjects covered by former us classification20%
B22FWorking metallic powder16%
C23CCoating metallic material16%
B22DCasting of metals4%
PatentTitleYear
5,453,241'Cemented carbide body with extra tough behavior'19955,413,869'Cemented carbide body with increased wear resistance'19955,401,461'Cemented carbide body used preferably for abrasive rock drilling and mineral cutting'19955,286,549'Cemented carbide body used preferably for abrasive rock drilling and mineral cutting'19945,279,901'Cemented carbide body with extra tough behavior'19944,820,482'Cemented carbide body with a binder phase gradient and method of making the same'19894,764,255'Cemented carbide tool'19884,743,515'Cemented carbide body used preferably for rock drilling and mineral cutting'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1995Patents assigned to SANDVIK AB (6)· patent assignee history
1988–1989Patents assigned to SANTRADE LTD (2)· patent assignee history
1988Based in Alvsjo, SE· patent location history
1989–1995Based in Stockholm, SE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SANDVIK AB | 6 | 1988–1995 |
| SANTRADE LTD | 2 | 1988–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Stockholm, SE | 6 | 1989–1995 |
| Alvsjo, SE | 2 | 1988 |