- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 21/02 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
Patent holdings for IPC class F28F 21/02
Total number of patents in this class: 386
10-year publication summary
|
55
|
53
|
69
|
39
|
26
|
32
|
17
|
23
|
19
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SGL Carbon SE | 403 |
15 |
| Raytheon Company | 8456 |
14 |
| Global Graphene Group, Inc. | 248 |
13 |
| Fractal Heatsink Technologies, LLC | 21 |
9 |
| Lockheed Martin Corporation | 3262 |
8 |
| NeoGraf Solutions, LLC | 86 |
8 |
| Kelvin Thermal Energy Inc. | 22 |
7 |
| Affinity Graphite Ltd. | 7 |
7 |
| Apple Inc. | 58621 |
6 |
| Microsoft Technology Licensing, LLC | 54427 |
6 |
| Sekisui Chemical Co., Ltd. | 3603 |
6 |
| Denso Corporation | 25495 |
5 |
| Laird Technologies, Inc. | 376 |
5 |
| The Boeing Company | 20153 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 33845 |
4 |
| Magaldi Industrie S.r.l. | 23 |
4 |
| Mersen France PY SAS | 15 |
4 |
| Sekisui Polymatech Co., Ltd. | 216 |
4 |
| SHT Smart High Tech AB | 27 |
4 |
| Graphite Solar Power Pty Ltd | 5 |
4 |
| Other owners | 249 |