- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F22B - Methods of steam generationsteam boilers
- F22B 21/00 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
Patent holdings for IPC class F22B 21/00
Total number of patents in this class: 33
10-year publication summary
|
6
|
6
|
4
|
5
|
1
|
0
|
1
|
0
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Andritz Oy | 281 |
6 |
| Stork Thermeq B.V. | 8 |
3 |
| Siemens AG | 24568 |
2 |
| Alstom Technology Ltd | 1145 |
2 |
| Alfa Laval Olmi S.p.A | 22 |
2 |
| Siemens Energy Global GmbH & Co. KG | 2843 |
2 |
| Sullivan, Higgins, and Brion PPE LLC | 10 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8545 |
1 |
| Agenzia Nazionale per le Nuove Tecnologie, L'energia e LO Sviluppo Economico Sostenibile (enea) | 27 |
1 |
| Ansaldo Nucleare S.p.A. | 5 |
1 |
| General Electric Technology GmbH | 1599 |
1 |
| Higgins, Daniel R. | 1 |
1 |
| Hitachi Power Europe GmbH | 13 |
1 |
| IHI Corporation | 3366 |
1 |
| Intellihot, Inc. | 129 |
1 |
| NEM Energy B.V. | 18 |
1 |
| Sullivan, Eugene | 1 |
1 |
| Nooter/eriksen, Inc. | 64 |
1 |
| Mackwell Locomotive Company Limited | 1 |
1 |
| Doosan Enerbility Co., Ltd. | 208 |
1 |
| Other owners | 1 |