| Anmelder |
Datum |
Patentnummer |
Cluster |
| Calgon Corporation (Pittsburgh, PA) |
1984-05-02 | 4654378.txt | cluster_2 |
| CALGON CORP (US) |
1987-10-29 | EP0274189A1.txt | cluster_19 |
| The Hong Kong Polytechnic University (Hong Kong Sar, CN) |
2003-06-12 | 6989426.txt | cluster_23 |