A47J 31/4457
Water-level indicators
Official title: {Water-level indicators}
A47J31/4457 (Water-level indicators) appears on 71 US grants and 102 published applications in this corpus.
Search patents in A47J- Granted patents
- 71
- Published applications
- 102
- Assignees
- 58
- Inventors
- 194
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 2 |
| 2008 | 3 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 1 | 3 |
| 2012 | 3 | 2 |
| 2013 | 3 | 2 |
| 2014 | 0 | 6 |
| 2015 | 3 | 7 |
| 2016 | 3 | 1 |
| 2017 | 4 | 6 |
| 2018 | 7 | 9 |
| 2019 | 6 | 5 |
| 2020 | 4 | 8 |
| 2021 | 6 | 4 |
| 2022 | 1 | 7 |
| 2023 | 6 | 8 |
| 2024 | 6 | 5 |
| 2025 | 2 | 9 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drainage connector unit and assembly for the drainage of liquid waste of beverage dispensing devices29 Apr 2025US 12,285,131 B2Koninklijke Douwe Egberts B. V.
- Drinkware with active temperature control7 Jan 2025US 12,185,870 B2Ember Technologies, Inc.
- Beverage-making machine24 Sep 2024US 12,096,881 B2Hamilton Beach Brands, Inc.
- Beverage brewing machine10 Sep 2024US 12,082,737 B2Top Electric Appliance Industrial Limited
- Dishware or serverware with active temperature control16 Jul 2024US 12,035,843 B2Ember Technologies, Inc.
- Beverage brewing system27 Aug 2026US 2026/0248316 A1Coulee Coffee Co.
- A kitchen appliance27 Aug 2026US 2026/0251292 A1Breville Pty Limited
- Cold Brew Percolator Device14 May 2026US 2026/0130535 A1
- Beverage machine26 Mar 2026US 2026/0083274 A1Kalerm Technology (Suzhou) Co., Ltd
- System and method for detecting a fluid level25 Dec 2025US 2025/0386967 A1Breville Pty Limited
Most cited
By later US patents
- Heated or cooled dishware and drinkware169US 9,035,222 B2Oromo Technologies, Inc. · 2015
- Method and apparatus for liquid level sensing113US 7,377,162 B2Keurig, Incorporated · 2008
- Method and apparatus for sensing liquid level using baseline characteristic105US 7,360,418 B2Keurig, Incorporated · 2008
- Heated or cooled dishware and drinkware82US 9,814,331 B2Ember Technologies, Inc. · 2017
- Heated or cooled dishware and drinkware and food containers58US 10,010,213 B2Ember Technologies, Inc. · 2018