F22B 27/08
Bent helically, i.e. coiled
Official title: bent helically, i.e. coiled
F22B27/08 (Bent helically, i.e. coiled) appears on 17 US grants and 12 published applications in this corpus.
Search patents in F22B- Granted patents
- 17
- Published applications
- 12
- Assignees
- 10
- Inventors
- 32
- Latest grant
- 9 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 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 | 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 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- High-pressure instant steam generator9 Apr 2024US 11,953,197 B2CleanNesta LLC
- Water treatment system2 Apr 2024US 11,944,922 B1
- High-efficiency two-chamber boiler using turbulent reverse flow of combustion gases20 Jun 2023US 11,680,704 B2
- On-demand vapor generator and control system1 Mar 2022US 11,261,760 B2Enviro Power, Inc.
- Water-tube boiler with concentric heat-exchange coils with ash-removal system26 Oct 2021US 11,156,355 B2
- Steam generator and method24 Oct 2024US 2024/0353093 A1
- Novel high-efficiency two-chamber boiler using turbulent reverse flow of combustion gases3 Nov 2022US 2022/0349570 A1
- Water-Tube Boiler with Concentric Heat-Exchange Coils with Ash-Removal System5 Aug 2021US 2021/0239312 A1
- High-pressure instant steam generator8 Jul 2021US 2021/0207797 A1CleanNesta LLC
- On-Demand Vapor Generator and Control System12 Mar 2020US 2020/0080446 A1Enviro Power, Inc.
Most cited
By later US patents
- Spiral concentric-tube heat exchanger37US 3,976,129 A1976
- Boiler or vapor generator using catalytic combustion of hydrocarbons15US 4,089,303 A1978
- Steam generator7US 4,246,871 A1981
- Water heater6US 4,007,712 ASioux Steam Cleaner Corporation · 1977
- Combustion powered cooling system5US 6,138,457 AApplied Power Technology Incorporated · 2000