- 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: 434
10-year publication summary
|
38
|
28
|
21
|
13
|
17
|
12
|
28
|
21
|
31
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IHI Corporation | 3452 |
17 |
| General Electric Company | 13863 |
14 |
| Air Products and Chemicals, Inc. | 1446 |
13 |
| Honeywell International Inc. | 13564 |
12 |
| ExxonMobil Upstream Research Company | 2389 |
12 |
| Praxair Technology, Inc. | 1286 |
12 |
| GE Infrastructure Technology, LLC | 6201 |
11 |
| Alstom Technology Ltd | 1090 |
10 |
| Electric Power Development Co., Ltd. | 72 |
9 |
| Siemens AG | 24350 |
8 |
| Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources | 106 |
7 |
| John Zink Company, LLC | 141 |
7 |
| Webasto SE | 1174 |
6 |
| WS Warmeprozesstechnik GmbH | 41 |
6 |
| Zeeco, Inc. | 41 |
6 |
| Fives Stein | 105 |
5 |
| General Electric Technology GmbH | 1370 |
5 |
| Korea Institute of Industrial Technology | 1015 |
5 |
| Linde Aktiengesellschaft | 1493 |
5 |
| L' Air Liquide Societe Anonyme Pour L' Etude et L' Exploitation des procedes Georges Claude | 64 |
5 |
| Other owners | 259 |