| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Canada | 1 | |
| #5 | Germany | 1 | |
| #6 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Pig-iron processing | |
| #2 | Metal production and refining | |
| #3 | Alloys | |
| #4 | Soldering, welding and flame cutting | |
| #5 | Casting metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ototani Tohei | 9 |
| Publication | Filing date | Title |
|---|---|---|
| US5225156A | Clean steel composition | |
| US5055018A | Clean steel | |
| US4944798A | Method of manufacturing clean steel | |
| US4832742A | Flexible refining-agent clad wire for refining molten iron group metal | |
| US4484946A | Method of producing iron-, nickle-, or cobalt-base alloy with low contents of oxygen, sulphur, and nitrogen | |
| GB2069898A | Inoculation to a molten cast iron during pouring | |
| US4094666A | Method for refining molten iron and steels |