E03D 1/35
Flushing valves having buoyancy
E03D1/35 (Flushing valves having buoyancy) appears on 67 US grants and 86 published applications in this corpus.
Search patents in E03D- Granted patents
- 67
- Published applications
- 86
- Assignees
- 29
- Inventors
- 126
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 7 |
| 2012 | 1 | 2 |
| 2013 | 1 | 6 |
| 2014 | 3 | 1 |
| 2015 | 1 | 5 |
| 2016 | 2 | 4 |
| 2017 | 6 | 2 |
| 2018 | 6 | 5 |
| 2019 | 7 | 8 |
| 2020 | 8 | 9 |
| 2021 | 7 | 6 |
| 2022 | 3 | 3 |
| 2023 | 0 | 7 |
| 2024 | 5 | 4 |
| 2025 | 8 | 3 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Omni configured flapper systems for various flush valve sizes and methods of retrofit30 Sep 2025US 12,428,827 B2Fluidmaster, Inc.
- Discharge valve device, flush water tank device, and flush toilet16 Sep 2025US 12,416,142 B2Toto Ltd.
- Dual-control flushing device9 Sep 2025US 12,410,597 B2
- Water tank drainage volume control structure, and toilet5 Aug 2025US 12,378,755 B2Xiamen R&T Plumbing Technology Co., Ltd.
- Reconfigurable flapper for different sized flush valves15 Jul 2025US 12,359,413 B2Lavelle Industries, Inc.
- Reconfigurable flapper for different sized flush valves16 Jul 2026US 2026/0201684 A1Lavelle Industries, Inc.
- Flowrate-increasing drain head and drain valve28 May 2026US 2026/0146426 A1Zhongshan Meitu Plastic Ind. Co., Ltd.
- Flowrate-increasing drain valve28 May 2026US 2026/0146428 A1Zhongshan Meitu Plastic Ind. Co., Ltd.
- Omni configured flapper systems for various flush valve sizes and methods of retrofit29 Jan 2026US 2026/0028808 A1Fluidmaster, Inc.
- Reconfigurable flapper assembly for toilet flush valve20 Nov 2025US 2025/0354364 A1Lavelle Industries, Inc.
Most cited
By later US patents
- Limited volume high performance flush valve assembly20US 8,079,095 B2Ideal Standard International BVBA · 2011
- Toilet flush valve with reducing cross section valve seat15US 8,806,669 B2Kohler Co. · 2014
- Float valve assembly10US 4,467,482 A1984
- Flush valve with snap-on flapper10US 4,841,579 A1989
- Absorbent article comprising a synthetic polymer derived from a renewable resource and methods of producing said article8US 10,501,920 B2The Procter & Gamble Company · 2019