| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | Italy | 5 | |
| #3 | France | 4 | |
| #4 | Netherlands | 2 | |
| #5 | Sweden | 2 | |
| #6 | USSR (Union of Socialist Soviet Republics) | 2 | |
| #7 | United Kingdom | 1 | |
| #8 | Japan | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Rotary-pistons | |
| #3 | Unspecified technologies | |
| #4 | Steam turbines | |
| #5 | Making gears or toothed racks | |
| #6 | Refrigerators | |
| #7 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zimmern Bernard | 9 |
| #2 | Ohtsuki Akira | 4 |
| #3 | Zimmern Bernar | 2 |
| #4 | Zimmern B | 2 |
| #5 | Zimmern Bernard Dr | 1 |
| #6 | Bucau Roger | 1 |
| #7 | Berunarudo Jimumerun | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4484872A | Globoid-worm machine with tapered screw clearance near high pressure end seal | |
| DE2833292A1 | PROCEDURE FOR ADJUSTING THE FLOW RATE OF A ROTARY PISTON MACHINE AND ROTARY PISTON MACHINE FOR CARRYING OUT THE PROCEDURE | |
| DE2449705A1 | Multi-start worm screw compressor or expansion engine - has sealing gear wheel with tooth flanks on low, longer than on high pressure side | |
| SU579930A3 | Machine for compression or expansion of fluids |