- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 3/00 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
Patent holdings for IPC class F24F 3/00
Total number of patents in this class: 356
10-year publication summary
|
25
|
27
|
48
|
38
|
33
|
35
|
28
|
30
|
14
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
23 |
| Mitsubishi Electric Corporation | 43934 |
19 |
| Daikin Industries, Ltd. | 9495 |
15 |
| Carrier Corporation | 4759 |
15 |
| Lennox Industries Inc. | 1088 |
12 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
11 |
| Siemens Industry, Inc. | 1417 |
7 |
| Google LLC | 38759 |
7 |
| Tyco Fire & Security GmbH | 2172 |
7 |
| Johnson Controls Technology Company | 1522 |
5 |
| Omachron Intellectual Property Inc. | 869 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| Fisher & Paykel Healthcare Limited | 2218 |
4 |
| Rheem Manufacturing Company | 861 |
4 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 786 |
4 |
| Ademco Inc. | 1374 |
4 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
4 |
| Beijing Jingkelun Engineering Design and Research Institute Co., Ltd. | 11 |
4 |
| Denso Wave Incorporated | 365 |
3 |
| Kimura Kohki Co., Ltd. | 40 |
3 |
| Other owners | 196 |