- 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: 1600
10-year publication summary
|
130
|
102
|
86
|
105
|
60
|
90
|
97
|
66
|
62
|
25
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF Corporation | 2039 |
55 |
| Johnson Matthey Public Limited Company | 1852 |
52 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
38 |
| Umicore AG & Co. KG | 867 |
28 |
| IHI Corporation | 3268 |
27 |
| Mitsubishi Power, Ltd. | 1680 |
24 |
| Intelligent Abatement, LLC | 20 |
20 |
| Yara International ASA | 753 |
19 |
| General Electric Technology GmbH | 1657 |
18 |
| Tronox LLC | 177 |
15 |
| Chevron U.S.A. Inc. | 3774 |
14 |
| Institute of Process Engineering, Chinese Academy of Sciences | 250 |
14 |
| ThyssenKrupp Industrial Solutions AG | 729 |
13 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
13 |
| BASF SE | 19740 |
12 |
| Messer Industries USA, Inc. | 103 |
11 |
| Toyota Motor Corporation | 28582 |
10 |
| Casale SA | 572 |
10 |
| Huaneng Clean Energy Research Institute | 345 |
10 |
| The General Hospital Corporation | 4517 |
9 |
| Other owners | 1188 |