| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 16 | |
| #2 | Austria | 3 | |
| #3 | Switzerland | 3 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Krenkler Karl Prof Dr Rer Nat | 5 |
| #2 | Wagner Friedrich | 5 |
| #3 | Lipka Fedor | 2 |
| #4 | Karl Krenkler Dr Rer Nat | 1 |
| #5 | Karl Krenkler Dr | 1 |
| #6 | Koester Rolf Ing | 1 |
| #7 | Koester Rolf | 1 |
| #8 | Pertschi Stefan | 1 |
| #9 | Hans-Hermann Speidel Dipl-Ing | 1 |
| #10 | Schugt Manfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1958706A1 | Porous concrete building elements | |
| DE1950393A1 | Mortar for bituminous compositions contain- - ing linear plastics or vulcanisable elasto-mers | |
| DE1945040A1 | Gypsum-free cement coating for steel | |
| DE1917706A1 | Filters for pressed motors for pre-stressed - concrete | |
| DE1902881A1 | Sealing and preserving of gas pipes | |
| DE1609370A1 | Method and device for filling joints between components |