- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 53/50 - Sulfur oxides
Patent holdings for IPC class B01D 53/50
Total number of patents in this class: 1780
10-year publication summary
|
151
|
140
|
157
|
174
|
136
|
132
|
99
|
108
|
66
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8217 |
131 |
| Mitsubishi Power, Ltd. | 1680 |
62 |
| General Electric Technology GmbH | 1657 |
59 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
58 |
| Jiangnan Environmental Protection Group Inc. | 63 |
48 |
| Fuji Electric Co., Ltd. | 4750 |
41 |
| Alstom Technology Ltd | 1196 |
32 |
| IHI Corporation | 3268 |
31 |
| Babcock-Hitachi Kabushiki Kaisha | 107 |
25 |
| Chiyoda Corporation | 363 |
23 |
| Intelligent Abatement, LLC | 20 |
20 |
| NOx II, Ltd. | 50 |
19 |
| Saudi Arabian Oil Company | 11322 |
16 |
| ARQ Solutions (es), Inc. | 58 |
16 |
| Kurita Water Industries Ltd. | 1110 |
14 |
| MECS, Inc. | 80 |
14 |
| Yongfeng Boyuan Industry Co. Ltd., Jiangxi Province | 21 |
14 |
| Mississippi Lime Company | 59 |
13 |
| S.A. Lhoist Recherche et Developpement | 163 |
13 |
| Solvay SA | 1181 |
13 |
| Other owners | 1118 |