| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Brazil | 2 | |
| #3 | China | 2 | |
| #4 | Denmark | 2 | |
| #5 | Finland | 2 | |
| #6 | Ireland | 2 | |
| #7 | Israel | 2 | |
| #8 | Norway | 2 | |
| #9 | United States | 2 | |
| #10 | Argentina | 1 | |
| #11 | Canada | 1 | |
| #12 | German Democratic Republic | 1 | |
| #13 | EPO (European Patent Office) | 1 | |
| #14 | Hungary | 1 | |
| #15 | New Zealand | 1 | |
| #16 | WIPO (World Intellectual Property Organization) | 1 | |
| #17 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Medical technology | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Syringes | |
| #2 | Analysing materials | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fehder Carl G | 20 |
| #2 | Fehder Carl G Dr | 1 |
| #3 | Carl G Fehder Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK600889D0 | DETECTOR FOR QUANTITATIVE DETERMINATION OF CARBON Dioxide | |
| IL89837D0 | Quantitative carbon dioxide detector | |
| IE891039L | Detector for the quantitative determination of carbon¹dioxide in a gas | |
| US4994117A | Quantitative carbon dioxide detector | |
| US4728499A | Carbon dioxide indicator device |