| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 7 | |
| #2 | EPO (European Patent Office) | 7 | |
| #3 | WIPO (World Intellectual Property Organization) | 7 | |
| #4 | Australia | 2 | |
| #5 | Canada | 2 | |
| #6 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Electrical machinery and energy | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Installation of electric cables | |
| #3 | Handling thin material |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ketelsen Andres | 25 |
| #2 | Ketelsen Joern-Ove | 7 |
| #3 | Ketelsen Broder | 7 |
| #4 | Kestelsen Andres | 1 |
| #5 | Ketelsen Joern-Ove Dipl Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE10244646A1 | Inductive flow meter | |
| DE10244642A1 | Inductive flow meter | |
| DE10244647A1 | Inductive flow meter for electrically conductive liquids | |
| DE19535997A1 | Inductive flow meter | |
| DE19535998A1 | Inductive flow meter | |
| DE4100987A1 | DEVICE FOR INDUCTIVELY MEASURING THE CONDITION OF A CURRENT ELECTRICALLY CONDUCTIVE LIQUID | |
| DE4002030A1 | INDUCTIVE FLOWMETER | |
| US1128003A | Excavating-machine. |