- 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: 1083
10-year publication summary
|
86
|
99
|
95
|
81
|
71
|
73
|
93
|
69
|
82
|
43
|
| 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 | 1078 |
92 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1538 |
91 |
| Mitsubishi Electric Corporation | 47971 |
64 |
| Daikin Industries, Ltd. | 10478 |
46 |
| Hanon Systems | 2106 |
31 |
| Copeland LP | 700 |
30 |
| Edwards Limited | 773 |
28 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
22 |
| LG Electronics Inc. | 75654 |
19 |
| Denso Corporation | 25513 |
19 |
| GREE Electric Appliances, Inc. of Zhuhai | 3316 |
18 |
| Ingersoll-Rand Industrial U.S., Inc. | 534 |
18 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 974 |
15 |
| Toyota Industries Corporation | 1209 |
14 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2831 |
14 |
| Panasonic Corporation | 19060 |
12 |
| Hitachi, Ltd. | 16071 |
12 |
| Air Squared, LLC | 31 |
12 |
| Danfoss Commercial Compressors | 96 |
11 |
| Pfeiffer Vacuum | 184 |
11 |
| Other owners | 504 |