B63H 21/08
Relating to steam boilers
Official title: relating to steam boilers
B63H21/08 (Relating to steam boilers) appears on 5 US grants and 3 published applications in this corpus.
Search patents in B63H- Granted patents
- 5
- Published applications
- 3
- Assignees
- 5
- Inventors
- 16
- Latest grant
- 15 Feb 2022
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 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Carbon negative energy generation system15 Feb 2022US 11,247,765 B2X Development LLC
- Naval propulsion system fed by refuse derived fuel and method thereof6 Feb 2007US 7,172,475 B2Worldwide Ecological Shipping & Transport West
- Natural gas supply apparatus29 Jul 2003US 6,598,564 B2Cryostar-France SA
- Coal fired ship3 May 1983US 4,381,724 AHitachi Shipbuilding & Engineering Co., Ltd.
- Boiler reactor22 Jun 1976US 3,964,416 AThe United States of America as represented by the Secretary of the Navy
- Carbon negative energy generation system6 May 2021US 2021/0129967 A1X Development LLC
- Naval propulsion system fed by refuse derived fuel and method thereof30 Jun 2005US 2005/0142960 A1Worldwide Ecological Shipping & Transport West
- Natural gas supply apparatus20 Mar 2003US 2003/0054307 A1Cryostar-France SA
Most cited
By later US patents