| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | United States | 4 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Machine tools | |
| #5 | Basic materials chemistry |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walter Lachmann | 5 |
| #2 | Lachmann Walter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1478479A | Process and apparatus for utilizing liquefied gases | |
| US1510178A | Rectifying column | |
| US1510177A | Apparatus for utilizing noncompressed oxygen, especially in autogenous high-temperature processes | |
| US1363659A | Continual process of fractionally distilling gaseous mixtures | |
| GB100085A | Continuous Separating Process for Gas Mixtures and Apparatus therefor. |