- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
Patent holdings for IPC class F28F 19/04
Total number of patents in this class: 133
10-year publication summary
|
6
|
11
|
15
|
14
|
15
|
12
|
13
|
8
|
9
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
15 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
10 |
| Koninklijke Philips N.V. | 22975 |
8 |
| Carrier Corporation | 4759 |
4 |
| Valeo Systemes Thermiques | 2471 |
4 |
| LG Electronics Inc. | 69257 |
3 |
| Daikin Industries, Ltd. | 9495 |
3 |
| G.m.a. SRL | 4 |
3 |
| 3m Innovative Properties Company | 18406 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
2 |
| Fondital S.p.A. | 24 |
2 |
| Hyfra Industriekuhlanlagen GmbH | 9 |
2 |
| Nihon Parkerizing Co., Ltd. | 274 |
2 |
| Nippon Paint Surf Chemicals Co., Ltd. | 82 |
2 |
| Techno-coat SA | 3 |
2 |
| GTK Timek Group SA | 9 |
2 |
| Agc, Inc. | 4029 |
2 |
| Keyon Process Co., Ltd | 6 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Other owners | 60 |