- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 251/62 - Purification of melamine
Patent holdings for IPC class C07D 251/62
Total number of patents in this class: 53
10-year publication summary
|
4
|
4
|
2
|
1
|
4
|
0
|
2
|
13
|
2
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 634 |
22 |
| Stamicarbon B.V. | 321 |
14 |
| DSM IP Assets B.V. | 5373 |
4 |
| Eurotecnica Contractors and Engineers S.p.A. | 11 |
2 |
| Eurotecnica Melamine, Luxemburg, Zweigniederlassung in Ittigen | 4 |
2 |
| Lurgi GmbH | 94 |
2 |
| BASF SE | 21308 |
1 |
| Merck Patent GmbH | 5729 |
1 |
| AMI Agrolinz Melamine International GmbH | 5 |
1 |
| Urea Casale S.A. | 33 |
1 |
| Vomm Impianti e Processi S.p.A. | 24 |
1 |
| Otkrytoe Aktsionernoe Obschestvo Research & Design Institute of Urea and Organic Synthesis Products (oao Niik) | 18 |
1 |
| Оtkrytое Аktsiоnеrnое Оbsсhеstvо Rеsеаrсh & Design Institute of Urеа Аnd Оrgаniс Synthеsis Рrоduсts (oao Niik) | 1 |
1 |
| Other owners | 0 |