- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 1/08 - Tubular elements crimped or corrugated in longitudinal section
Patent holdings for IPC class F28F 1/08
Total number of patents in this class: 118
10-year publication summary
|
20
|
11
|
14
|
8
|
10
|
7
|
4
|
4
|
4
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2821 |
6 |
| Hamilton Sundstrand Corporation | 5018 |
5 |
| Hanon Systems | 2090 |
5 |
| Uop LLC | 4396 |
4 |
| AIC S.A. | 52 |
3 |
| Hieta Technologies Limited | 27 |
3 |
| Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | 153 |
3 |
| The University of Tokyo | 4354 |
3 |
| Senior UK Limited | 11 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 293 |
2 |
| China Petroleum & Chemical Corporation | 2124 |
2 |
| HS R & a Co., Ltd. | 33 |
2 |
| Industrie ILPEA S.p.A. | 38 |
2 |
| Intergas Heating Assets B.V. | 30 |
2 |
| MAHLE International GmbH | 2906 |
2 |
| Rygan Corp. | 8 |
2 |
| UACJ Corporation | 731 |
2 |
| Waki Factory Inc. | 9 |
2 |
| Xerotech Limited | 27 |
2 |
| Xinchang County Sitong Electrical Co., Ltd. | 5 |
2 |
| Other owners | 61 |