- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 53/52 - Hydrogen sulfide
Patent holdings for IPC class B01D 53/52
Total number of patents in this class: 1172
10-year publication summary
|
94
|
113
|
88
|
87
|
69
|
46
|
66
|
77
|
72
|
41
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 9252 |
55 |
| Saudi Arabian Oil Company | 14398 |
52 |
| IFP Energies Nouvelles | 3125 |
22 |
| The Kansai Electric Power Co., Inc. | 123 |
22 |
| Aramco Services Company | 4190 |
19 |
| Ecolab USA Inc. | 5842 |
19 |
| Shell Internationale Research Maatschappij B.V. | 3378 |
18 |
| Streamline Innovations, Inc. | 68 |
16 |
| Uop LLC | 4407 |
15 |
| King Fahd University of Petroleum and Minerals | 1603 |
14 |
| ExxonMobil Research And Engineering Company | 2389 |
12 |
| BASF SE | 21334 |
11 |
| Air Products and Chemicals, Inc. | 1476 |
11 |
| Evoqua Water Technologies LLC | 928 |
11 |
| ExxonMobil Upstream Research Company | 2283 |
11 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 194 |
11 |
| Dow Global Technologies LLC | 11072 |
10 |
| Chevron U.S.A. Inc. | 4180 |
9 |
| Commonwealth Scientific and Industrial Research Organisation | 1651 |
9 |
| Dorf Ketal Chemicals (India) Private Limited | 71 |
9 |
| Other owners | 816 |