H05B 6/804
Water heaters, water boilers
Official title: {Water heaters, water boilers}
H05B6/804 (Water heaters, water boilers) appears on 62 US grants and 62 published applications in this corpus.
Search patents in H05B- Granted patents
- 62
- Published applications
- 62
- Assignees
- 37
- Inventors
- 124
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 5 |
| 2006 | 0 | 1 |
| 2007 | 3 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 7 |
| 2014 | 2 | 0 |
| 2015 | 3 | 3 |
| 2016 | 2 | 6 |
| 2017 | 4 | 3 |
| 2018 | 3 | 2 |
| 2019 | 2 | 2 |
| 2020 | 3 | 3 |
| 2021 | 1 | 2 |
| 2022 | 3 | 4 |
| 2023 | 2 | 2 |
| 2024 | 3 | 3 |
| 2025 | 2 | 6 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Eco-friendly boiler2 Sep 2025US 12,405,029 B2
- Method and apparatus for single pipe instant warm water supply in buildings4 Feb 2025US 12,215,893 B1Radinsight Consulting & Trading Co.
- Electronic cigarette28 May 2024US 11,992,050 B2Aspire North America LLC
- Sustainable auto pulsed electromagnetic irradiation system for zero discharge water treatment14 May 2024US 11,981,585 B2King Abdulaziz University
- Quantum kinetic oscillator9 Jan 2024US 11,871,501 B2
- Uniform electric field cavity design methods for single-mode liquid microwave resonant cavity27 Aug 2026US 2026/0254091 A1Ocean University of China
- Aerosol generating device and operation method thereof30 Apr 2026US 2026/0114509 A1Kt&G Corporation
- Method and apparatus for single pipe instant warm water supply in buildings12 Feb 2026US 2026/0043581 A1Radinsight Consulting & Trading Co.
- Eco-friendly boiler13 Nov 2025US 2025/0347442 A1
- On-wing heating container for beverage makers17 Apr 2025US 2025/0120536 A1B/E Aerospace, Inc.
Most cited
By later US patents
- Method and apparatus for recovering fractions from hydrocarbon materials, facilitating the removal and cleansing of hydrocarbon fluids, insulating storage vessels, and cleansing storage vessels and pipelines223US 5,055,180 AElectromagnetic Energy Corporation · 1991
- Microwave water heating method and apparatus46US 4,417,116 A1983
- Fluid heater apparatus40US 4,358,652 A1982
- Inverted frustum shaped microwave heat exchanger using a microwave source with multiple magnetrons and applications thereof38US 5,179,259 A1993
- Apparatus for drying ceramic structures using dielectric energy34US 5,406,058 ACorning Incorporated · 1995