- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F28C - Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction
- F28C 3/14 - Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material moving by gravity, e.g. down a tube
Patent holdings for IPC class F28C 3/14
Total number of patents in this class: 26
10-year publication summary
|
3
|
5
|
1
|
2
|
1
|
3
|
2
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Calix Ltd | 87 |
3 |
| Sumitomo Metal Mining Co., Ltd. | 1730 |
3 |
| Alstom Technology Ltd | 1145 |
2 |
| Purdue Research Foundation | 3477 |
2 |
| Alliance for Sustainable Energy, LLC | 756 |
2 |
| Beteiligungen Sorg GmbH & Co. KG | 47 |
2 |
| Farmet A.S. | 35 |
2 |
| General Electric Company | 17789 |
1 |
| Siemens Energy, Inc. | 1731 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10692 |
1 |
| AGREX S.p.A. | 12 |
1 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. | 760 |
1 |
| SABIC Global Technologies B.V. | 4203 |
1 |
| SRI International | 1000 |
1 |
| Haffner Energy | 43 |
1 |
| CM Shredders, L.L.C. | 6 |
1 |
| Power Solutions Gamma France | 111 |
1 |
| Other owners | 0 |