| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 14 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Thermal processes | |
| #3 | Control | |
| #4 | Electrical machinery and energy |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emmerich Wilhelm | 14 |
| Publication | Filing date | Title |
|---|---|---|
| DE2945661A1 | Warm water floor heating system - forms self-supporting tile floor and uses low-temp heat carrier | |
| DE2925031A1 | Control for central heating boiler - keeps flue gas pressure constant and controls gas flow | |
| DE2732744A1 | Combined compressor and motor with heat pump - utilises central heating boiler flue gases generating mechanical and thermal energy | |
| DE2720075A1 | Solar hot water or heating system - uses double convex lens to collect and focus rays | |
| DE2620395A1 | Heat economiser for oil fired central heating - includes heat pump at flue with water coil housed under roof tiles | |
| DE1673564A1 | Adjustment membrane |