- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28D - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact; heat storage plants or apparatus in general
- F28D 20/02 - Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups or using latent heat
Patent holdings for IPC class F28D 20/02
Total number of patents in this class: 1642
10-year publication summary
|
115
|
138
|
203
|
204
|
179
|
193
|
134
|
141
|
99
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2471 |
61 |
| Denso Corporation | 23338 |
55 |
| Hutchinson | 455 |
33 |
| Sunamp Limited | 62 |
26 |
| Sharp Kabushiki Kaisha | 18957 |
23 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
20 |
| BASF SE | 19740 |
14 |
| Kyungdong Navien Co., Ltd. | 566 |
14 |
| Octopus Energy Group Limited | 79 |
14 |
| Siemens AG | 24990 |
13 |
| Panasonic Corporation | 20786 |
12 |
| Mitsubishi Electric Corporation | 43934 |
11 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
11 |
| Ford Global Technologies, LLC | 19702 |
10 |
| Raytheon Company | 8535 |
10 |
| Yazaki Energy System Corporation | 99 |
10 |
| Phase Change Energy Solutions, Inc. | 63 |
10 |
| Exa Energy Technology (Shenzhen) Co., Ltd. | 16 |
10 |
| FUJIFILM Corporation | 27102 |
9 |
| BAE SYSTEMS plc | 2215 |
9 |
| Other owners | 1267 |