- All sections
- C - Chemistrymetallurgy
- C01C - Ammoniacyanogencompounds thereof
- C01C 3/02 - Preparation of hydrogen cyanide
Patent holdings for IPC class C01C 3/02
Total number of patents in this class: 117
10-year publication summary
|
21
|
9
|
8
|
3
|
6
|
6
|
3
|
2
|
4
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| INVISTA Technologies S.a.r.l. | 413 |
23 |
| BASF SE | 21039 |
11 |
| INVISTA North America S.a.r.l. | 176 |
7 |
| Evonik Operations GmbH | 4178 |
7 |
| Evonik Degussa GmbH | 1486 |
6 |
| Haldor Topsøe A/S | 646 |
6 |
| Arkema France | 4170 |
5 |
| Topsoe A/S | 923 |
5 |
| Aurotec GmbH | 46 |
4 |
| Evonik Röhm GmbH | 433 |
3 |
| Rohm and Haas Company | 2910 |
3 |
| Synergen Met Limited | 3 |
3 |
| Mitsubishi Chemical Corporation | 4583 |
2 |
| Heraeus Deutschland GmbH & Co. KG | 417 |
2 |
| Rohm GmbH | 262 |
2 |
| Trinseo Europe GmbH | 312 |
2 |
| INVISTA Textiles (U.K.) Limited | 260 |
2 |
| INV Nylon Chemicals Americas, LLC | 190 |
2 |
| Centre National de La Recherche Scientifique | 10576 |
1 |
| DSM IP Assets B.V. | 5575 |
1 |
| Other owners | 20 |