| # | Country | Total Patents | |
|---|---|---|---|
| #1 | German Democratic Republic | 3 | |
| #2 | Japan | 3 | |
| #3 | Brazil | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Portugal | 1 | |
| #11 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Organic fine chemistry | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Acyclic or carbocyclic compounds | |
| #2 | Climate change mitigation in goods production |
| # | Name | Total Patents |
|---|---|---|
| #1 | Biller Efim | 11 |
| #2 | Efuimu Biraa | 2 |
| #3 | Biller E | 1 |
| #4 | Eehimu Biraa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5998042A | Manufacture of methylene bridge-containing polyarylamine | |
| BR8305870A | Process for the preparation of methylenodynylin mixtures | |
| EP0015876A1 | Process for the production of hydroquinone | |
| DE2748968A1 | PROCESS FOR THE PRODUCTION OF METHYLENE BRIDGES POLYARYLAMINES |