- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28D - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contactheat storage plants or apparatus in general
- F28D 20/02 - Heat storage plants or apparatus in generalRegenerative 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: 1774
10-year publication summary
|
132
|
192
|
194
|
176
|
186
|
127
|
135
|
101
|
109
|
89
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2762 |
60 |
| Denso Corporation | 24783 |
54 |
| Hutchinson | 476 |
33 |
| Sunamp Limited | 75 |
26 |
| Sharp Kabushiki Kaisha | 18624 |
24 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10954 |
19 |
| Phasestor, LLC | 36 |
15 |
| BASF SE | 21087 |
14 |
| Octopus Energy Group Limited | 101 |
14 |
| Siemens AG | 24333 |
13 |
| Panasonic Corporation | 19966 |
13 |
| Mitsubishi Electric Corporation | 46926 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 32457 |
12 |
| Nostromo Ltd. | 16 |
11 |
| Ford Global Technologies, LLC | 20932 |
10 |
| Raytheon Company | 8445 |
10 |
| Yazaki Energy System Corporation | 97 |
10 |
| Kyungdong Navien Co., Ltd. | 620 |
10 |
| Phase Change Energy Solutions, Inc. | 63 |
10 |
| Exa Energy Technology (Shenzhen) Co., Ltd. | 16 |
10 |
| Other owners | 1394 |