- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/04223 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
Patent holdings for IPC class H01M 8/04223
Total number of patents in this class: 902
10-year publication summary
52
|
104
|
96
|
87
|
90
|
75
|
91
|
82
|
100
|
33
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Robert Bosch GmbH | 40953 |
113 |
Hyundai Motor Company | 19021 |
104 |
Toyota Motor Corporation | 28582 |
92 |
Honda Motor Co., Ltd. | 24537 |
50 |
Kia Motors Corporation | 7946 |
46 |
Nissan Motor Co., Ltd. | 12249 |
40 |
Audi AG | 7153 |
29 |
AVL List GmbH | 1232 |
23 |
Intelligent Energy Limited | 464 |
23 |
cellcentric GmbH & Co. KG | 160 |
20 |
Kia Corporation | 6450 |
16 |
GM Global Technology Operations LLC | 13620 |
12 |
Bloom Energy Corporation | 590 |
12 |
Ford Global Technologies, LLC | 19702 |
11 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
10 |
Hydrogenics Corporation | 204 |
10 |
Daimler AG | 3462 |
9 |
Hyundai Mobis Co., Ltd. | 2668 |
9 |
Safran Power Units | 108 |
9 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
8 |
Other owners | 256 |