| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Denmark | 1 | |
| #7 | Netherlands | 1 | |
| #8 | Norway | 1 | |
| #9 | Sweden | 1 | |
| #10 | United States | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Organic fine chemistry | |
| #2 | Biotechnology | |
| #3 | Foods and drinks |
| # | Technology | |
|---|---|---|
| #1 | Heterocyclic compounds | |
| #2 | Enzymes | |
| #3 | Microorganisms |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haefeli Robert | 4 |
| #2 | Hefeli R | 1 |
| #3 | Haefeli Robert Dr | 1 |
| #4 | Hafeli R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7406658B | Process for preparing 4,5 diphenyl-oxazol-2-one | |
| NL7413681A | 4,5-Diphenyl-4-oxazolin-2-one prepn. - from benzoin and cyanic acid pref. in dimethylformamide | |
| GB1428341A | Process for preparing 4,5-diphenyl-oxazol-2-one | |
| DE2428249A1 | PROCESS FOR THE PREPARATION OF 4,5DIPHENYLOXAZOLONE- (2) | |
| DE2428248A1 | METHOD OF REMOVAL OF PYROGENS FROM UROHIRASE |