A47J 31/542
Continuous-flow heaters
Official title: {Continuous-flow heaters}
A47J31/542 (Continuous-flow heaters) appears on 278 US grants and 309 published applications in this corpus.
Search patents in A47J- Granted patents
- 278
- Published applications
- 309
- Assignees
- 176
- Inventors
- 593
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 7 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 3 |
| 2003 | 5 | 5 |
| 2004 | 2 | 3 |
| 2005 | 0 | 8 |
| 2006 | 5 | 8 |
| 2007 | 3 | 10 |
| 2008 | 2 | 11 |
| 2009 | 2 | 8 |
| 2010 | 3 | 20 |
| 2011 | 7 | 9 |
| 2012 | 6 | 6 |
| 2013 | 15 | 14 |
| 2014 | 7 | 23 |
| 2015 | 4 | 20 |
| 2016 | 11 | 10 |
| 2017 | 16 | 17 |
| 2018 | 13 | 19 |
| 2019 | 17 | 17 |
| 2020 | 18 | 18 |
| 2021 | 11 | 13 |
| 2022 | 10 | 13 |
| 2023 | 11 | 13 |
| 2024 | 14 | 15 |
| 2025 | 8 | 14 |
| 2026 | 7 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Beverage preparation machine and cooling module25 Aug 2026US 12,715,751 B2Koninklijke Douwe Egberts B. V.
- Modular brew systems11 Aug 2026US 12,702,248 B2Starbucks Corporation
- Beverage brewing systems and methods5 May 2026US 12,616,327 B2Sensio Inc.
- Electric heater, in particular for household appliance for preparing hot beverages28 Apr 2026US 12,611,064 B2I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini
- Coffee machine with dynamic flow and temperature control17 Mar 2026US 12,575,694 B2Nuli Coffee, Inc.
- Brewing and cooling a beverage17 Sep 2026US 2026/0272211 A1ColdSnap, Corp.
- Coffee making system27 Aug 2026US 2026/0248322 A1Maxi (Beijing) International Brand Management Co., Ltd.
- Coffee machine and method of coffee extraction with such a coffee machine13 Aug 2026US 2026/0232132 A1DE' LONGHI APPLIANCES S.r.l.
- Beverage-making machine25 Jun 2026US 2026/0174272 A1Hamilton Beach Brands, Inc.
- Beverage-making machine with vacuum break valve25 Jun 2026US 2026/0174274 A1Hamilton Beach Brands, Inc.
Most cited
By later US patents
- Dispenser which incrementally heats fluids with substantial non-volatile constituent parts140US 6,311,868 B1New Sensations, L.L.C. · 2001
- Coffee machine117US 5,992,298 ACreaholic S.A. · 1999
- Coffee making machines109US 5,549,035 ASimatelex Manufactory Co., Ltd. · 1996
- Portable beverage brewing device92US 5,440,972 A1995
- Coffee machine69US 5,738,001 AIllycaffe's S.P.A. · 1998