| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | United States | 6 | |
| #3 | United Kingdom | 4 | |
| #4 | Spain | 3 | |
| #5 | Brazil | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Unspecified technologies | |
| #3 | Shafts | |
| #4 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wunner Charles H | 10 |
| #2 | Wunner Charles Hamilton | 8 |
| #3 | Wallace Tommy Michael | 8 |
| #4 | Wallace Tommy M | 4 |
| #5 | Wallace T Michael | 4 |
| #6 | Hamilton Wunner Charles | 2 |
| #7 | Wunner Charles Hamilto | 1 |
| #8 | Wallace T M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6106239A | Air flow apparatus for liquid ring vacuum pump | |
| CA2235248A1 | Improved air intake apparatus for liquid ring vacuum pump | |
| US5423614A | Self aligning removable bearing carrier for a liquid ring vacuum pump | |
| US5328274A | Liquid ring vacuum pump-compressor with self aligning removable bearing bracket | |
| US5222869A | Liquid ring vacuum pump-compressor with rotor cone clearance concentrated in the seal segment | |
| US5246348A | Liquid ring vacuum pump-compressor with double function of liquid ring with separate sources |