| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Spain | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Switzerland | 2 | |
| #4 | France | 2 | |
| #5 | United States | 2 | |
| #6 | Austria | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | AC and DC conversion devices | |
| #2 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Auvert Louis Rene | 6 |
| #2 | Ferrand Alphonse Francois Erne | 4 |
| #3 | Ferrand Alphonse Francois Ernest | 2 |
| #4 | Louis Rene Auvert | 2 |
| #5 | Francois Ernest Ferrand Alphon | 2 |
| #6 | Louis-Rene Auvert | 2 |
| #7 | Alphonse-Francois-Ernest Ferrand | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB191020948A | Improvements in Rotary Transformers for Converting Alternating into Direct Current. | |
| GB190815864A | A Device for Suppressing Parasitic Fluxes in Rotary Converters of the Statorless Type. | |
| GB190613585A | Apparatus for Enabling the Transformation of a Single-phase Alternating Current into a Continuous Current. | |
| US857267A | Redressing and regulating device enabling to transform a single-phase current into a continuous one. | |
| US1101384A | Antisparking device for dynamo-electric machines. |