Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5335738 | Tools for percussive and rotary crushing rock drilling provided with a diamond layer | Mats Waldenstrom, Udo Fischer, Lars H. Hillert | 1994-08-09 |
| 5264283 | Diamond tools for rock drilling, metal cutting and wear part applications | Mats Waldenstrom, Udo K. R. Fisher, Lars H. Hillert | 1993-11-23 |
| 5217081 | Tools for cutting rock drilling | Mats Waldenstrom, Udo Fischer, Lars H. Hillert | 1993-06-08 |
| 5154245 | Diamond rock tools for percussive and rotary crushing rock drilling | Mats Waldenstrom, Udo Fischer, Lars H. Hillert | 1992-10-13 |
| 5120327 | Cutting composite formed of cemented carbide substrate and diamond layer | — | 1992-06-09 |
| 4819516 | Method of forming a cutting element having a V-shaped diamond cutting face | — | 1989-04-11 |
| 4784023 | Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same | — | 1988-11-15 |
| 4749052 | Cutting element adapted to be pushed into a recess of a drill bit body | — | 1988-06-07 |
| 4739845 | Nozzle for rotary bit | — | 1988-04-26 |
| 4727945 | Cutting element having diamond cutting blank reinforced by a shoulder | — | 1988-03-01 |
| 4716975 | Cutting element having a stud and cutting disk bonded thereto | — | 1988-01-05 |
| 4705123 | Cutting element for a rotary drill bit and method for making same | — | 1987-11-10 |
| 4662896 | Method of making an abrasive cutting element | — | 1987-05-05 |
| 4640374 | Rotary drill bit | — | 1987-02-03 |
| 4632196 | Drill bit with shrouded cutter | — | 1986-12-30 |
| 4592433 | Cutting blank with diamond strips in grooves | — | 1986-06-03 |
| RE32036 | Drill bit | — | 1985-11-26 |
| 4538691 | Rotary drill bit | — | 1985-09-03 |
| 4339896 | Abrasive compact dressing tools, tool fabrication methods for dressing a grinding wheel with such tools | Frank R. Skinner | 1982-07-20 |
| 4323130 | Drill bit | — | 1982-04-06 |
| 4255165 | Composite compact of interleaved polycrystalline particles and cemented carbide masses | Paul D. Gigl | 1981-03-10 |
| 4247305 | Abrasive structures and methods of their preparation | William H. Daniels, Earl Feingold | 1981-01-27 |