- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-piston, or oscillating-piston, positive-displacement pumps
- F04C 29/04 - HeatingCoolingHeat insulation
Patent holdings for IPC class F04C 29/04
Total number of patents in this class: 1059
10-year publication summary
|
84
|
97
|
93
|
80
|
71
|
73
|
84
|
67
|
79
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Atlas Copco Airpower, naamloze vennootschap | 1057 |
92 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1511 |
91 |
| Mitsubishi Electric Corporation | 47449 |
64 |
| Daikin Industries, Ltd. | 10243 |
37 |
| Hanon Systems | 2045 |
30 |
| Copeland LP | 694 |
30 |
| Edwards Limited | 788 |
27 |
| Panasonic Intellectual Property Management Co., Ltd. | 33168 |
22 |
| LG Electronics Inc. | 74619 |
19 |
| Denso Corporation | 25062 |
19 |
| GREE Electric Appliances, Inc. of Zhuhai | 3269 |
18 |
| Ingersoll-Rand Industrial U.S., Inc. | 523 |
18 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 946 |
15 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2851 |
14 |
| Toyota Industries Corporation | 1181 |
13 |
| Panasonic Corporation | 19853 |
12 |
| Hitachi, Ltd. | 15846 |
12 |
| Air Squared, LLC | 29 |
12 |
| Danfoss Commercial Compressors | 92 |
11 |
| Pfeiffer Vacuum | 175 |
11 |
| Other owners | 492 |