- 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 20/00 - Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups or
Patent holdings for IPC class F28D 20/00
Total number of patents in this class: 2059
10-year publication summary
|
205
|
216
|
200
|
226
|
187
|
187
|
172
|
213
|
183
|
49
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kabushiki Kaisha Toyota Jidoshokki | 1699 |
47 |
| Denso Corporation | 23338 |
42 |
| Siemens AG | 24990 |
41 |
| Malta Inc. | 107 |
34 |
| Rondo Energy, Inc. | 40 |
30 |
| Valeo Systemes Thermiques | 2471 |
27 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2362 |
25 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
24 |
| Hydrostor Inc. | 49 |
17 |
| Mitsubishi Electric Corporation | 43934 |
16 |
| Siemens Gamesa Renewable Energy GmbH & Co. KG | 47 |
16 |
| Panasonic Corporation | 20786 |
15 |
| Kabushiki Kaisha Toyota Chuo Kenkyusho | 587 |
15 |
| Clean Planet Inc. | 61 |
14 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 730 |
14 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
14 |
| Hutchinson | 455 |
12 |
| Kelvin Thermal Energy Inc. | 26 |
12 |
| Lumenion GmbH | 21 |
12 |
| NGK Insulators, Ltd. | 4589 |
11 |
| Other owners | 1621 |