- 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: 1142
10-year publication summary
|
75
|
95
|
76
|
72
|
58
|
40
|
47
|
68
|
63
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13839 |
53 |
| Mitsubishi Heavy Industries, Ltd. | 8962 |
52 |
| IFP Energies Nouvelles | 3007 |
20 |
| The Kansai Electric Power Co., Inc. | 131 |
20 |
| Aramco Services Company | 4154 |
19 |
| Ecolab USA Inc. | 5659 |
19 |
| Shell Internationale Research Maatschappij B.V. | 3507 |
16 |
| Uop LLC | 4275 |
15 |
| King Fahd University of Petroleum and Minerals | 1432 |
14 |
| Streamline Innovations, Inc. | 66 |
14 |
| BASF SE | 21149 |
12 |
| ExxonMobil Research And Engineering Company | 2498 |
12 |
| Dow Global Technologies LLC | 10699 |
12 |
| Air Products and Chemicals, Inc. | 1450 |
11 |
| Evoqua Water Technologies LLC | 926 |
11 |
| ExxonMobil Upstream Research Company | 2359 |
11 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 194 |
11 |
| Chevron U.S.A. Inc. | 4040 |
9 |
| Dorf Ketal Chemicals (India) Private Limited | 74 |
9 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4018 |
9 |
| Other owners | 793 |