- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 17/69 - Sulfur trioxideSulfuric acid
Patent holdings for IPC class C01B 17/69
Total number of patents in this class: 80
10-year publication summary
|
9
|
9
|
7
|
2
|
11
|
10
|
6
|
7
|
4
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SixRing Inc. | 179 |
13 |
| Chemetics Inc. | 69 |
6 |
| Messer Industries USA, Inc. | 126 |
3 |
| Metso Metals Oy | 226 |
3 |
| BASF SE | 21334 |
2 |
| E. I. du Pont de Nemours and Company | 3439 |
2 |
| Chevron Phillips Chemical Company LP | 1877 |
2 |
| MECS, Inc. | 63 |
2 |
| Nemaska Lithium Inc. | 79 |
2 |
| Silicon Fire AG | 19 |
2 |
| SunCoke Technology and Development LLC | 227 |
2 |
| Heritage Research Group, LLC | 71 |
2 |
| Hugo Petersen GmbH | 6 |
2 |
| Mironova Labs, Inc. | 4 |
2 |
| Peregrine Hydrogen Inc. | 18 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 49324 |
1 |
| Thermo Fisher Scientific Inc. | 220 |
1 |
| BHP Billiton SSM Development Pty Ltd. | 27 |
1 |
| Cppe Carbon Process & Plant Engineering S.A. | 17 |
1 |
| de Dietrich Process Systems GmbH | 8 |
1 |
| Other owners | 28 |