- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 31/20 - Carbon dioxide
Patent holdings for IPC class C01B 31/20
Total number of patents in this class: 658
10-year publication summary
|
52
|
18
|
6
|
2
|
0
|
0
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8712 |
67 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3976 |
30 |
| IHI Corporation | 3425 |
21 |
| The Kansai Electric Power Co., Inc. | 134 |
16 |
| Research Institute of Innovative Technology for the Earth | 89 |
13 |
| Shell Internationale Research Maatschappij B.V. | 3542 |
11 |
| Union Engineering A/S | 26 |
9 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3099 |
9 |
| Siemens AG | 24505 |
8 |
| FUJIFILM Corporation | 29350 |
8 |
| Babcock-Hitachi Kabushiki Kaisha | 103 |
8 |
| Hitachi, Ltd. | 15476 |
7 |
| Air Products and Chemicals, Inc. | 1423 |
7 |
| Panasonic Corporation | 20124 |
6 |
| Alstom Technology Ltd | 1108 |
6 |
| Johnson Matthey Public Limited Company | 1851 |
6 |
| Chevron U.S.A. Inc. | 3953 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3805 |
5 |
| Calix Ltd | 93 |
5 |
| General Electric Technology GmbH | 1368 |
5 |
| Other owners | 406 |