E03C 1/23
With mechanical closure mechanisms
Official title: with mechanical closure mechanisms
E03C1/23 (With mechanical closure mechanisms) appears on 348 US grants and 353 published applications in this corpus.
Search patents in E03C- Granted patents
- 348
- Published applications
- 353
- Assignees
- 147
- Inventors
- 511
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 9 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 1 |
| 2002 | 11 | 4 |
| 2003 | 5 | 4 |
| 2004 | 3 | 5 |
| 2005 | 4 | 4 |
| 2006 | 3 | 11 |
| 2007 | 1 | 8 |
| 2008 | 2 | 13 |
| 2009 | 1 | 12 |
| 2010 | 0 | 10 |
| 2011 | 9 | 9 |
| 2012 | 9 | 11 |
| 2013 | 8 | 14 |
| 2014 | 10 | 14 |
| 2015 | 16 | 17 |
| 2016 | 8 | 14 |
| 2017 | 13 | 29 |
| 2018 | 14 | 25 |
| 2019 | 30 | 23 |
| 2020 | 24 | 16 |
| 2021 | 17 | 29 |
| 2022 | 17 | 12 |
| 2023 | 22 | 22 |
| 2024 | 16 | 22 |
| 2025 | 15 | 14 |
| 2026 | 12 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E03C 1/2302The actuation force being transmitted to the plug via rigid elements133
- E03C 1/232Combined with overflow devices99
- E03C 1/2306The plug being operated by hand contact90
- E03C 2001/2311The actuation force being magnetic or electromagneticIndexing code39
- E03C 1/2304The actuation force being transmitted to the plug via flexible elements38
- E03C 2001/2315The actuation force created by a turning movement of a handleIndexing code28
- E03C 2001/2317Transmission of actuation force involves a springIndexing code27
- E03C 2001/2313The actuation force being pneumatic or hydraulicIndexing code8
All 9 subgroupsShow fewer
Recent patents
- Easy drain installation assembly for bath or shower8 Sep 2026US 12,729,525 B2Kohler Co.
- Magnetic suspension drain8 Sep 2026US 12,729,526 B2Lixil (China) Investment Co., Ltd.
- Pop up stopper and seal8 Sep 2026US 12,729,527 B2Danco, Inc.
- Fitting, piece of bathroom or kitchen furniture comprising said fitting, and method for opening and closing a drain in a piece of bathroom or kitchen furniture1 Sep 2026US 12,723,390 B2Franke Technology and Trademark Ltd
- Wash basin with dual outlet openings split by a small partition of two extending ends for water separation11 Aug 2026US 12,703,970 B2
- Stopper for a sink drain17 Sep 2026US 2026/0275693 A1
- Drain stopper with plunging seal10 Sep 2026US 2026/0266035 A1
- Dual-function pin for push-pull and lift-turn stoppers9 Jul 2026US 2026/0193873 A1WCM Industries, Inc.
- Illuminated pop-up drain18 Jun 2026US 2026/0168223 A1Delta Faucet Company
- Flowrate-increasing drain head and drain valve28 May 2026US 2026/0146426 A1Zhongshan Meitu Plastic Ind. Co., Ltd.
Most cited
By later US patents
- Automatic bathtub water level control system107US 4,042,984 AAmerican Bath and Shower Corporation · 1977
- Drain assembly69US 6,058,526 AComponent Hardware Group, Inc. · 2000
- Combined faucet and drain assembly61US 6,484,330 B2Kohler Co. · 2002
- Bath drain closure assembly46US 7,451,502 B2WCM Industries, Inc. · 2008
- Touch pop-up stopper for basin drain45US 6,195,819 B12001