| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 3 | |
| #4 | Australia | 2 | |
| #5 | Belgium | 2 | |
| #6 | Germany | 2 | |
| #7 | India | 2 | |
| #8 | Italy | 2 | |
| #9 | EPO (European Patent Office) | 1 | |
| #10 | France | 1 | |
| #11 | Japan | 1 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mccrea Donald H | 8 |
| #2 | Benson Homer E | 5 |
| #3 | Field Joseph H | 5 |
| #4 | Field Joseph Herman | 3 |
| #5 | Field J | 2 |
| #6 | Benson H | 2 |
| #7 | Parrish Roger W | 2 |
| #8 | Donarudo Eichi Makurei | 1 |
| #9 | Mccrea D | 1 |
| #10 | Houmaa Ii Benson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4293531A | Selective removal of H2 S from gas mixtures containing CO2 and H2 S | |
| US4160810A | Removal of acid gases from hot gas mixtures | |
| GB1513267A | Ammonia synthesis | |
| CA1038598A | Ammonia synthesis | |
| US3907969A | Separation of CO{HD 2 {B from gas mixtures | |
| US3947551A | Ammonia synthesis | |
| US3863003A | Method of removing carbon dioxide from gases | |
| GB1415036A | Separation of co2 from gas mixtures |