Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717429 | Process for the removal of alkali metal nitrite from nitrate containing salt baths | Helmut Kunst | 1988-01-05 |
| 4492604 | Salt bath for nitriding iron materials | Johannes Müller, Helmut Kunst | 1985-01-08 |
| 4292094 | Process for increasing the corrosion resistance of nitrided structural parts made of iron material | Helmut Kunst | 1981-09-29 |