- 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: 1120
10-year publication summary
|
55
|
75
|
95
|
76
|
72
|
58
|
40
|
46
|
68
|
51
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13316 |
53 |
| Mitsubishi Heavy Industries, Ltd. | 8777 |
52 |
| IFP Energies Nouvelles | 2948 |
20 |
| The Kansai Electric Power Co., Inc. | 137 |
20 |
| Aramco Services Company | 4007 |
19 |
| Ecolab USA Inc. | 5509 |
19 |
| Uop LLC | 4242 |
15 |
| Shell Internationale Research Maatschappij B.V. | 3549 |
14 |
| Streamline Innovations, Inc. | 62 |
13 |
| BASF SE | 20961 |
12 |
| ExxonMobil Research And Engineering Company | 2564 |
12 |
| Dow Global Technologies LLC | 10394 |
12 |
| Evoqua Water Technologies LLC | 916 |
11 |
| ExxonMobil Upstream Research Company | 2395 |
11 |
| King Fahd University of Petroleum and Minerals | 1259 |
11 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 197 |
11 |
| Air Products and Chemicals, Inc. | 1441 |
9 |
| Dorf Ketal Chemicals (India) Private Limited | 74 |
9 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3992 |
9 |
| Shell Oil Company | 2138 |
8 |
| Other owners | 780 |