| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 15 | |
| #2 | United States | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Foundry moulding | |
| #2 | Casting metal | |
| #3 | Cylinders for combustion engines | |
| #4 | Details of furnaces | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mayer Ernest | 16 |
| #2 | Ernest Mayer | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US2454819A | Mold | |
| US2369067A | Mold | |
| GB521478A | Improvements in or relating to processes for the production of toothed gear wheels | |
| GB192683A | Improved manufacture of metal castings | |
| US1505401A | Casting and in the process for its manufacture |