| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 21 | |
| #2 | Switzerland | 19 | |
| #3 | France | 10 | |
| #4 | United Kingdom | 5 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Materials and metallurgy | |
| #3 | Chemical engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haftung Salpetersaeure Industr | 15 |
| #2 | Beschraenkter Haftung Salpeter | 3 |
| #3 | Hafrtung Salpetersaeure Indust | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB191022319A | An Improved Process of Producing Nitric Oxide from Mixtures of Nitrogen and Oxygen, and Apparatus therefor. | |
| GB191009884A | Process of Manufacturing Nitrites and Nitrates. | |
| GB190919466A | An Improvement in Electric Furnaces for the Treatment of Gases by Means of Flame-arcs. | |
| GB190823385A | An Improvement in the Process of Manufacturing Nitric Acid from Mixtures of Nitrogenous Gases and Water. |