| # | Country | Total Patents | |
|---|---|---|---|
| #1 | South Africa | 3 | |
| #2 | Australia | 2 | |
| #3 | Brazil | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Argentina | 1 | |
| #6 | Canada | 1 | |
| #7 | Germany | 1 | |
| #8 | Ireland | 1 | |
| #9 | Israel | 1 | |
| #10 | Italy | 1 | |
| #11 | Norway | 1 | |
| #12 | Philippines | 1 | |
| #13 | Turkey | 1 | |
| #14 | United States | 1 | |
| #15 | Zambia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machines | |
| #3 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Feltz M | 9 |
| #2 | Feltz Michel | 2 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7203826B | Ferrous alloys | |
| IE35519L | Improvements in and relating to ferrous alloys | |
| ZA7105454B | Ferrous alloys |