- 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: 50
10-year publication summary
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2
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4
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3
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2
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1
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3
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0
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2
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8
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Casale SA | 613 |
20 |
| Stamicarbon B.V. | 302 |
11 |
| DSM IP Assets B.V. | 5585 |
4 |
| Eurotecnica Melamine, Luxemburg, Zweigniederlassung in Ittigen | 5 |
2 |
| Lurgi GmbH | 98 |
2 |
| Urea Casale S.A. | 35 |
2 |
| Vomm Impianti e Processi S.p.A. | 27 |
2 |
| Proman AG | 14 |
2 |
| BASF SE | 20940 |
1 |
| Merck Patent GmbH | 5815 |
1 |
| AMI Agrolinz Melamine International GmbH | 10 |
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 |