- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23C - Methods or apparatus for combustion using fluid fuel or solid fuel suspended in air
- F23C 9/00 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
Patent holdings for IPC class F23C 9/00
Total number of patents in this class: 451
10-year publication summary
|
30
|
22
|
14
|
18
|
12
|
31
|
23
|
32
|
31
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IHI Corporation | 3527 |
17 |
| Air Products and Chemicals, Inc. | 1469 |
16 |
| General Electric Company | 13915 |
14 |
| Honeywell International Inc. | 12776 |
13 |
| ExxonMobil Upstream Research Company | 2291 |
12 |
| Praxair Technology, Inc. | 1215 |
12 |
| GE Infrastructure Technology, LLC | 6159 |
11 |
| Alstom Technology Ltd | 1036 |
10 |
| Electric Power Development Co., Ltd. | 68 |
9 |
| Siemens AG | 23996 |
8 |
| Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources | 105 |
7 |
| John Zink Company, LLC | 132 |
7 |
| Webasto SE | 1191 |
6 |
| WS Warmeprozesstechnik GmbH | 42 |
6 |
| Zeeco, Inc. | 42 |
6 |
| Fives Stein | 107 |
5 |
| General Electric Technology GmbH | 1336 |
5 |
| Korea Institute of Industrial Technology | 1032 |
5 |
| Linde Aktiengesellschaft | 1419 |
5 |
| Technische Universiteit Eindhoven | 392 |
5 |
| Other owners | 272 |