| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Netherlands | 3 | |
| #5 | Austria | 2 | |
| #6 | United States | 2 | |
| #7 | Spain | 1 | |
| #8 | Greece | 1 | |
| #9 | Italy | 1 | |
| #10 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Iron and steel production | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoeren Herbert | 2 |
| #2 | Engelhardt Hans-Peter | 2 |
| #3 | Rudack Wolfgang Dipl Ing Dr In | 1 |
| #4 | Renkey Albert Lajos | 1 |
| #5 | Rudack Wolfgang | 1 |
| #6 | Kunkele Rudolf | 1 |
| #7 | Lajos Bridgeville | 1 |
| #8 | Engelhardt Hans-Peter Dipl Ing | 1 |
| #9 | Engelhardt Hans-Peter Dipl-Ing | 1 |
| #10 | Engelhardt H-P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES8205735A3 | Procedure for the manufacture of uncollected refractory bricks (Machine-translation by Google Translate, not legally binding) | |
| DE2910309A1 | METHOD FOR PRODUCING FIREPROOF, UNBURNED STONES | |
| DE2745461B1 | Highly refractory brick, method of manufacture and use | |
| DE2638458A1 | UNFIRED, REFRACTORY MASS OR STONES FOR METALLURGICAL VESSELS | |
| US4017316A | Fireproof stamping mass for tap spouts and flues in blast furnaces |