- 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 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
Patent holdings for IPC class F28D 20/00
Total number of patents in this class: 2431
10-year publication summary
|
200
|
227
|
188
|
187
|
180
|
231
|
197
|
206
|
200
|
62
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rondo Energy, Inc. | 90 |
73 |
| Kabushiki Kaisha Toyota Jidoshokki | 1800 |
47 |
| Siemens AG | 24199 |
41 |
| Malta Inc. | 107 |
41 |
| Denso Corporation | 25232 |
37 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2423 |
27 |
| Valeo Systemes Thermiques | 2810 |
27 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11013 |
24 |
| Mitsubishi Electric Corporation | 47625 |
20 |
| Xi'an Thermal Power Research Institute Co., Ltd. | 438 |
18 |
| Clean Planet Inc. | 84 |
17 |
| Hydrostor Inc. | 58 |
16 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 821 |
15 |
| Kabushiki Kaisha Toyota Chuo Kenkyusho | 646 |
15 |
| Panasonic Corporation | 19577 |
14 |
| Siemens Gamesa Renewable Energy A/S | 1931 |
14 |
| NGK Insulators, Ltd. | 5206 |
12 |
| Hutchinson | 486 |
12 |
| MAHLE International GmbH | 2883 |
12 |
| Lumenion GmbH | 22 |
12 |
| Other owners | 1937 |