F22B 21/12
Involving two or more upper drums and two or more lower drums
Official title: involving two or more upper drums and two or more lower drums, e.g. with crosswise-arranged water-tube sets in abutting connection with drums
F22B21/12 (Involving two or more upper drums and two or more lower drums) appears on 3 US grants and 6 published applications in this corpus.
Search patents in F22B- Granted patents
- 3
- Published applications
- 6
- Assignees
- 6
- Inventors
- 15
- Latest grant
- 1 Nov 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
By publication year.
Subgroups
Granted patents
Recent patents
- Systems and methods for Utilizing flue gas1 Nov 2022US 11,486,572 B2Suncoke Technology and Development LLC
- Natural circulation multi-circulation package boiler with superheat for steam assisted gravity drainage (SAGD) process including superheat16 Aug 2022US 11,415,314 B2The Babcock & Wilcox Company
- Steam generator11 Feb 2020US 10,557,629 B2ROLLS-ROYCE plc
- Heat exchanger tube bundle and related heat recovery steam generator21 Nov 2024US 2024/0384945 A1NEM Energy B.V.
- Systems and methods for utilizing flue gas17 Aug 2023US 2023/0258326 A1Suncoke Technology and Development LLC
- Natural circulation multi-circulation package boiler with superheat for steam assisted gravity drainage (sagd) process including superheat24 Dec 2020US 2020/0400305 A1The Babcock & Wilcox Company
- Systems and methods for utilizing flue gas2 Jul 2020US 2020/0208833 A1Suncoke Technology and Development LLC
- Steam generator13 Aug 2015US 2015/0226420 A1ROLLS-ROYCE plc
Most cited
By later US patents