- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 53/34 - Chemical or biological purification of waste gases
Patent holdings for IPC class B01D 53/34
Total number of patents in this class: 1148
10-year publication summary
|
70
|
60
|
81
|
85
|
66
|
52
|
76
|
77
|
91
|
28
|
| 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 |
41 |
| General Electric Technology GmbH | 1657 |
32 |
| Saudi Arabian Oil Company | 11322 |
25 |
| Johnson Matthey Public Limited Company | 1852 |
17 |
| Intelligent Abatement, LLC | 20 |
17 |
| Umicore AG & Co. KG | 867 |
15 |
| BASF Corporation | 2039 |
12 |
| IFP Energies Nouvelles | 2717 |
11 |
| Mitsubishi Power, Ltd. | 1680 |
11 |
| Alstom Technology Ltd | 1196 |
10 |
| IHI Corporation | 3268 |
10 |
| Uop LLC | 4083 |
9 |
| NGK Insulators, Ltd. | 4589 |
8 |
| Caterpillar Inc. | 8877 |
7 |
| Babcock-Hitachi Kabushiki Kaisha | 107 |
7 |
| The Kansai Electric Power Co., Inc. | 155 |
7 |
| Jiangnan Environmental Protection Group Inc. | 63 |
7 |
| Denso Corporation | 23338 |
6 |
| Fuji Electric Co., Ltd. | 4750 |
6 |
| Chemisch Thermische Prozesstechnik GmbH | 12 |
6 |
| Other owners | 884 |