| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | France | 4 | |
| #3 | Germany | 3 | |
| #4 | Canada | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Belgium | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Organic fine chemistry | |
| #2 | Pharmaceuticals |
| # | Technology | |
|---|---|---|
| #1 | Heterocyclic compounds | |
| #2 | Acyclic or carbocyclic compounds | |
| #3 | Medical preparations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frommel Edouard | 3 |
| #2 | Philippe Gold | 3 |
| #3 | Gold Philippe | 3 |
| #4 | Gold-Aubert Philippe | 2 |
| #5 | Melkonian Diran | 2 |
| #6 | Frommel Edouard Prof | 1 |
| #7 | Philipe Gold-Aubert | 1 |
| #8 | Gold-Aubert Phillippe | 1 |
| #9 | Diran Melkonian | 1 |
| #10 | Gold-Aubert Philippe Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB883013A | N,n-substituted piperazines | |
| DE1082911B | Process for the preparation of quaternary amino ethers | |
| US2837533A | New quaternary amino ethers and a process for their preparation | |
| GB781407A | New quaternary amino ethers | |
| DE1079642B | Process for the preparation of quaternary amino ethers | |
| CA546166A | Quaternary amino ethers and process for the preparation thereof | |
| CA654642A | Piperazine derivatives |