| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | United States | 4 | |
| #3 | Germany | 1 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hartmann Otto Hermann | 3 |
| #2 | Erika Hingst | 2 |
| #3 | Hartmann Otto H | 1 |
| #4 | Joachim Gevecke | 1 |
| #5 | Hermann Hartmann Otto | 1 |
| #6 | Oatley Henry B | 1 |
| #7 | Peperkorn Heinrich | 1 |
| #8 | Schmidt Wilhelm | 1 |
| #9 | Fromut Vollhardt | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3095839A | Moving grate assembly | |
| US3106192A | Waste heat utilization | |
| US3164204A | Method and apparatus for preheating furnace combustion air | |
| DE597926C | Two-stage superheater for locomotive boiler or the like. | |
| GB318394A | Improvements in and relating to superheating in high-pressure locomotives | |
| US1605229A | Steam and water collector for high-pressure boilers | |
| CA151307A | Engine governor | |
| CA295174A | Method and apparatus for generating steam by the indirect method | |
| CA304059A | Two-pressure locomotive | |
| CA295173A | Marine boiler | |
| CA256021A | Boiler for movable steam-power plants |