F22B 9/04
The fire tubes being in upright arrangement
Official title: the fire tubes being in upright arrangement
F22B9/04 (The fire tubes being in upright arrangement) appears on 15 US grants and 11 published applications in this corpus.
Search patents in F22B- Granted patents
- 15
- Published applications
- 11
- Assignees
- 15
- Inventors
- 34
- Latest grant
- 7 Sep 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 0 | 1 |
| 2016 | 2 | 0 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 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
- Straight fin for device for recovering waste heat of raw coke oven gas in ascension pipe of coke oven, and heat recovering device1 Sep 2020US 10,760,001 B2Nanjing Huadian Energy-Saving & Environmental Protection Equipment Co., Ltd
- Process for the production of sulfur trioxide5 May 2020US 10,640,376 B2Haldor Topsoe A/S
- Heat exchangers with floating headers26 Nov 2019US 10,488,122 B2Dana Canada Corporation
- Co-fired absorption system generator30 May 2017US 9,664,451 B2Rocky Research
- Superheated steam boiler and method for operation thereof1 Jul 2021US 2021/0199282 A1Suspended Vortex Innovations LLC
- Straight fin for device for recovering waste heat of raw coke oven gas in ascension pipe of coke oven, and heat recovering device13 Feb 2020US 2020/0048557 A1Nanjing Huadian Energy-Saving & Environmental Protection Equipment Co., Ltd
- A process for the production of sulfur trioxide13 Jun 2019US 2019/0177161 A1Haldor TopsøE A/S
- Heat exchanger for heating water14 Mar 2019US 2019/0078772 A1Laars Heating Stystems Company
- Heat exchangers with floating headers13 Jul 2017US 2017/0198987 A1Dana Canada Corporation
Most cited
By later US patents