Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238668 | Process for production of potassium silicate solutions by the addition of tempered quartz to hydrothermally reacted quartz and KOH, and hydrothermal reaction thereof | Rudolf Novotny, Alfred Hoff | 1993-08-24 |
| 5084262 | Process for hydrothermal production of potassium silicate solutions | Rudolf Novotny, Alfred Hoff | 1992-01-28 |
| 5000933 | Process for hydrothermal production of sodium silicate solutions | Rudolf Novotny, Alfred Hoff | 1991-03-19 |