| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Netherlands | 6 | |
| #3 | Australia | 3 | |
| #4 | Switzerland | 2 | |
| #5 | Denmark | 2 | |
| #6 | Italy | 2 | |
| #7 | Norway | 2 | |
| #8 | Sweden | 2 | |
| #9 | United States | 2 | |
| #10 | Austria | 1 | |
| #11 | Spain | 1 | |
| #12 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Pipes | |
| #3 | Preparing clay | |
| #4 | Finishing work on buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gerritsen Jan Willem | 16 |
| #2 | Gerritsen J W | 1 |
| #3 | Yan Buiremu Geritozen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8203437A | Pulse damper for pulsating, e.g. peristaltic, pump - has outlet line contg. flexible tube in air-pressurised rigid housing | |
| NL8202311A | Apparatus for applying self-leveling liquid mortar to floors to obtain a screed. | |
| NL7905322A | Peristaltic hose pump with circular track - has elliptical friction rotor and housing width reduced to increase effective hose life | |
| NL7601867A | Hose pump and a pump hose intended for this. | |
| DE2539511A1 | PERISTALTIC PUMP | |
| AU6496374A | Peristaltic pump and hose therefor |