F24H 1/16
Helically or spirally coiled
Official title: helically or spirally coiled
F24H1/16 (Helically or spirally coiled) appears on 121 US grants and 147 published applications in this corpus.
Search patents in F24H- Granted patents
- 121
- Published applications
- 147
- Assignees
- 115
- Inventors
- 347
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 5 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 4 |
| 2004 | 3 | 4 |
| 2005 | 3 | 1 |
| 2006 | 3 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 3 | 5 |
| 2010 | 0 | 6 |
| 2011 | 1 | 6 |
| 2012 | 3 | 5 |
| 2013 | 5 | 11 |
| 2014 | 4 | 12 |
| 2015 | 4 | 7 |
| 2016 | 10 | 14 |
| 2017 | 9 | 4 |
| 2018 | 9 | 7 |
| 2019 | 8 | 14 |
| 2020 | 6 | 14 |
| 2021 | 4 | 3 |
| 2022 | 8 | 6 |
| 2023 | 5 | 2 |
| 2024 | 4 | 5 |
| 2025 | 0 | 6 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water heater having highly efficient and compact heat exchanger6 Oct 2026US RE51,053 E1A. O. Smith Corporation
- Heat exchanger and hot water apparatus including heat exchanger8 Sep 2026US 12,729,878 B2Noritz Corporation
- Heating device for liquids2 Jun 2026US 12,644,625 B2Reflexy Nederland B.V.
- Boiler for making hot water and room heating water available simultaneously17 Mar 2026US 12,578,120 B2
- Temperature control apparatus17 Sep 2024US 12,092,371 B2SMC Corporation
- Heating device for a steam generator8 Oct 2026US 2026/0309366 A1Yuyao Hengxi Technology Co., Ltd.
- Modular espresso brewing system19 Mar 2026US 2026/0076504 A1
- Heating device for machines for dispensing hot beverages, machine for dispensing hot beverages using said heating device, and method for simultaneously dispensing hot beverages by means of said machine5 Feb 2026US 2026/0033665 A1Cimbali Group S.p.A.
- Electric fluid heater4 Dec 2025US 2025/0369648 A1DBK David + Baader GmbH
- Vaporizer13 Nov 2025US 2025/0346989 A1Lintec Corporation
Most cited
By later US patents
- Thermostatically controlled electric heating device for motor vehicle glass washing fluid62US 4,508,957 A1985
- Smoke generator38US 4,818,843 A1989
- Instantaneous water heater35US 6,192,192 B1Creaholic S.A. · 2001
- Tubular high efficiency, non-contaminating fluid heater25US 5,396,574 AProcess Technology Inc. · 1995
- Heat exchanger24US 4,168,745 AThe American Equipment Systems Corporation · 1979