| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 2 | |
| #2 | Australia | 1 | |
| #3 | Bulgaria | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | China | 1 | |
| #7 | Czechoslovakia | 1 | |
| #8 | German Democratic Republic | 1 | |
| #9 | Denmark | 1 | |
| #10 | Egypt | 1 | |
| #11 | EPO (European Patent Office) | 1 | |
| #12 | Finland | 1 | |
| #13 | Hungary | 1 | |
| #14 | Israel | 1 | |
| #15 | India | 1 | |
| #16 | Mexico | 1 | |
| #17 | Norway | 1 | |
| #18 | New Zealand | 1 | |
| #19 | African Intellectual Property Organization | 1 | |
| #20 | Portugal | 1 | |
| #21 | Romania | 1 | |
| #22 | Slovenia | 1 | |
| #23 | Tunisia | 1 | |
| #24 | United States | 1 | |
| #25 | WIPO (World Intellectual Property Organization) | 1 | |
| #26 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Structural elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Spelten Hans | 22 |
| #2 | Hans Spelten | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EG18008A | Structural bar | |
| BR8607080A | Profiled beam |