- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 53/56 - Nitrogen oxides
Patent holdings for IPC class B01D 53/56
Total number of patents in this class: 1594
10-year publication summary
|
130
|
102
|
86
|
105
|
60
|
90
|
97
|
66
|
64
|
60
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Johnson Matthey Public Limited Company | 1870 |
51 |
| BASF Corporation | 1827 |
41 |
| Mitsubishi Heavy Industries, Ltd. | 8464 |
38 |
| Umicore AG & Co. KG | 859 |
28 |
| IHI Corporation | 3344 |
27 |
| Mitsubishi Power, Ltd. | 1714 |
23 |
| Intelligent Abatement, LLC | 22 |
22 |
| Yara International ASA | 790 |
21 |
| General Electric Technology GmbH | 1605 |
17 |
| BASF Mobile Emissions Catalysts LLC | 254 |
15 |
| Institute of Process Engineering, Chinese Academy of Sciences | 276 |
14 |
| Tronox LLC | 168 |
14 |
| Chevron U.S.A. Inc. | 3837 |
13 |
| ThyssenKrupp Industrial Solutions AG | 701 |
13 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13144 |
13 |
| BASF SE | 20304 |
12 |
| Messer Industries USA, Inc. | 112 |
11 |
| Casale SA | 591 |
10 |
| Huaneng Clean Energy Research Institute | 364 |
10 |
| Toyota Motor Corporation | 30107 |
9 |
| Other owners | 1192 |