- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F28F - Details of heat-exchange or heat-transfer apparatus, of general application
- F28F 13/00 - Arrangements for modifying heat transfer, e.g. increasing, decreasing
Patent holdings for IPC class F28F 13/00
Total number of patents in this class: 861
10-year publication summary
|
73
|
101
|
95
|
107
|
95
|
71
|
67
|
56
|
52
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Boeing Company | 19843 |
15 |
| Hyliion Holdings Corp. | 25 |
12 |
| Toyota Motor Corporation | 28582 |
11 |
| Raytheon Company | 8535 |
11 |
| International Business Machines Corporation | 60644 |
10 |
| Lockheed Martin Corporation | 3406 |
10 |
| Hamilton Sundstrand Corporation | 4525 |
10 |
| BAE SYSTEMS plc | 2215 |
10 |
| General Electric Company | 18133 |
9 |
| Intel Corporation | 45621 |
8 |
| Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6132 |
8 |
| Honeywell International Inc. | 13799 |
7 |
| Northrop Grumman Systems Corporation | 2940 |
7 |
| The Board of Trustees of the Leland Stanford Junior University | 6054 |
7 |
| Microsoft Technology Licensing, LLC | 51439 |
7 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
7 |
| Laird Technologies, Inc. | 385 |
7 |
| The Regents of the University of California | 18943 |
6 |
| Denso Corporation | 23338 |
6 |
| Siemens AG | 24990 |
5 |
| Other owners | 688 |