- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25B - Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systems
- F25B 21/04 - Machines, plants or systems, using electric or magnetic effects using Nernst-Ettinghausen effect reversible
Patent holdings for IPC class F25B 21/04
Total number of patents in this class: 450
10-year publication summary
|
49
|
66
|
77
|
73
|
54
|
52
|
46
|
46
|
38
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
22 |
| Ember Technologies, Inc. | 125 |
21 |
| GENTHERM Incorporated | 277 |
20 |
| Hyundai Motor Company | 19021 |
16 |
| Whirlpool Corporation | 4238 |
16 |
| Ambassador Asset Management Limited Partnership | 20 |
16 |
| Phononic, Inc. | 59 |
13 |
| Sleep Solutions, Inc. | 72 |
10 |
| Lear Corporation | 1196 |
8 |
| GENTHERM GmbH | 249 |
7 |
| Bio-Rad Laboratories, Inc. | 1592 |
6 |
| Kia Motors Corporation | 7946 |
5 |
| B/E Aerospace, Inc. | 1493 |
5 |
| II-VI Delaware, Inc. | 1720 |
5 |
| MAHLE International GmbH | 2670 |
5 |
| TEGway Co., Ltd. | 40 |
5 |
| Laird Thermal Systems, Inc. | 33 |
5 |
| The Regents of the University of California | 18943 |
4 |
| Kbautotech Co., Ltd. | 25 |
4 |
| Siemens Healthcare Diagnostics Inc. | 1946 |
4 |
| Other owners | 253 |