| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Iron and steel production | |
| #2 | Producer gas production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hellbrugge H | 3 |
| #2 | Hellbruegge Heinrich | 2 |
| #3 | Rebello Luiz Cabrera | 1 |
| #4 | Hellbrugge Heinrich | 1 |
| #5 | Parodi Marcos | 1 |
| #6 | Hellbruegge H | 1 |
| #7 | Gentile Mario | 1 |
| Publication | Filing date | Title |
|---|---|---|
| BR8703055A | Anchor traction test device without cepo | |
| BR8207114A | Process and equipment for manufacturing centrifuged shirts for machinery rolls in sugar plants | |
| DE2445446A1 | Direct prodn. of iron - with cleaning, regeneration and recirculation of redn. gas contg. carbon monoxide and hydrogen |