| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 2 | |
| #2 | Spain | 2 | |
| #3 | Israel | 2 | |
| #4 | United States | 2 | |
| #5 | Austria | 1 | |
| #6 | Australia | 1 | |
| #7 | Canada | 1 | |
| #8 | Switzerland | 1 | |
| #9 | Czechoslovakia | 1 | |
| #10 | Germany | 1 | |
| #11 | Denmark | 1 | |
| #12 | Finland | 1 | |
| #13 | France | 1 | |
| #14 | United Kingdom | 1 | |
| #15 | Hong Kong | 1 | |
| #16 | Hungary | 1 | |
| #17 | India | 1 | |
| #18 | Italy | 1 | |
| #19 | Japan | 1 | |
| #20 | Republic of Korea | 1 | |
| #21 | Norway | 1 | |
| #22 | New Zealand | 1 | |
| #23 | Philippines | 1 | |
| #24 | Romania | 1 | |
| #25 | Sweden | 1 | |
| #26 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #27 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Magnetic or electrostatic solid separation | |
| #2 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Colburn William A | 13 |
| #2 | Colburn W | 5 |
| #3 | Colburn W A | 4 |
| #4 | Colburn William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| BR8206750A | Process for separation of isotopes of an element | |
| IL67164D0 | Method of separating isotopes | |
| US4368387A | Method of separating isotopes | |
| KR810000128B1 | Method and apparatus for separating material | |
| US3994801A | Method and apparatus for separating material |