Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822420 | Sealing composition for soil barriers | Rudolf Burkhardt, Reiner Hitze, Gunther Zoche | 1989-04-18 |
| 4772327 | Easy-working spray concrete | Kurt Allemann, Klaus Deneke, Gunter Vogel | 1988-09-20 |
| 4759665 | Consolidating and/or sealing soils and composition therefor | Rudolf Burkhardt | 1988-07-26 |
| 4645382 | Method for the isolation of pollutants in soil strata | Rudolf Burkhardt | 1987-02-24 |
| 4609487 | Gel-forming mixture based on an alkali silicate and a trialkoxysilane | Rudolf Burkhardt, Horst Hanisch, Gunter Vogel | 1986-09-02 |
| 4565577 | Pollutant-resistant sealing composition | Rudolf Burkhardt | 1986-01-21 |
| 4504315 | Liquid accelerator for the setting of concrete mixtures | Kurt Allemann, Klaus Deneke, Gunter Vogel | 1985-03-12 |
| 4247436 | Aqueous solution of mixtures of silicon-organic compounds | Robert Buning, Horst Hanisch, Karl-Martin Rodder | 1981-01-27 |
| 4195141 | Aqueous solution of mixtures of silicon-organic compounds | Robert Buning, Horst Hanisch, Karl-Martin Rodder | 1980-03-25 |