F22B 13/023
With auxiliary water tubes inside the fire-box
Official title: {with auxiliary water tubes inside the fire-box, e.g. vertical tubes (F22B13/10 takes precedence)}
F22B13/023 (With auxiliary water tubes inside the fire-box) appears on 8 US grants and 6 published applications in this corpus.
Search patents in F22B- Granted patents
- 8
- Published applications
- 6
- Assignees
- 4
- Inventors
- 7
- Latest grant
- 7 Sep 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Superheated steam boiler and method for operation thereof7 Sep 2021US 11,112,108 B2Suspended Vortex Innovations LLC
- Steam boiler17 Feb 2015US 8,955,467 B1
- Heat regenerative engine28 Dec 2010US 7,856,822 B2Cyclone Power Technologies, Inc.
- Compact high efficiency gas fired steam generator-humidifier16 Oct 2007US 7,281,498 B2
- Heat regenerative engine25 Jul 2006US 7,080,512 B2Cyclone Technologies LLLP
- Superheated steam boiler and method for operation thereof1 Jul 2021US 2021/0199282 A1Suspended Vortex Innovations LLC
- Boiler for producing hot water or steam28 Mar 2019US 2019/0093879 A1I.C.I. Caldaie S.P.A.
- Heat regenerative engine16 Nov 2006US 2006/0254278 A1Cyclone Power Technologies, Inc.
- Compact high efficiency gas fired steam generator-humidifier9 Nov 2006US 2006/0249099 A1
- Heat regenerative engine16 Mar 2006US 2006/0053793 A1Cyclone Technologies LLLP
Most cited
By later US patents
- Heat regenerative engine14US 7,080,512 B2Cyclone Technologies LLLP · 2006
- Compact high efficiency gas fired steam generator-humidifier9US 7,281,498 B22007
- Compact ultra high efficiency gas fired steam generator8US 6,397,788 B22002
- Structure of a steaming apparatus7US 6,098,527 A2000
- Heat regenerative engine4US 7,856,822 B2Cyclone Power Technologies, Inc. · 2010