- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/79 - Preparation by contact processes characterised by the catalyst used containing vanadium
Patent holdings for IPC class C01B 17/79
Total number of patents in this class: 61
10-year publication summary
|
1
|
6
|
4
|
6
|
4
|
2
|
5
|
4
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 898 |
10 |
| BASF SE | 20940 |
6 |
| ThyssenKrupp AG | 3291 |
6 |
| ThyssenKrupp Industrial Solutions AG | 632 |
6 |
| Chemetics Inc. | 66 |
3 |
| JFE Steel Corporation | 6849 |
3 |
| Nihon Kanki Industry Co., Ltd. | 6 |
3 |
| OCP S.A. | 79 |
2 |
| Haldor Topsøe A/S | 660 |
2 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3035 |
2 |
| Kawasaki Engineering Co.,Ltd | 3 |
2 |
| Keyon Process Co., Ltd | 7 |
2 |
| BASF Schweiz AG | 28 |
1 |
| China Petroleum & Chemical Corporation | 1901 |
1 |
| Outotec (Finland) Oy | 480 |
1 |
| Saudi Arabian Oil Company | 13224 |
1 |
| TDA Research, Inc. | 65 |
1 |
| ThyssenKrupp Uhde GmbH | 332 |
1 |
| Li-technology Pty Ltd | 9 |
1 |
| Huang Rui | 23 |
1 |
| Other owners | 6 |