E03D 1/01
Shape or selection of material for flushing cisterns
E03D1/01 (Shape or selection of material for flushing cisterns) appears on 87 US grants and 82 published applications in this corpus.
Search patents in E03D- Granted patents
- 87
- Published applications
- 82
- Assignees
- 35
- Inventors
- 183
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 2 | 1 |
| 2009 | 2 | 6 |
| 2010 | 0 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 4 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 6 |
| 2016 | 2 | 2 |
| 2017 | 3 | 3 |
| 2018 | 5 | 7 |
| 2019 | 4 | 5 |
| 2020 | 4 | 3 |
| 2021 | 7 | 7 |
| 2022 | 4 | 6 |
| 2023 | 6 | 5 |
| 2024 | 0 | 4 |
| 2025 | 8 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pneumatic drain valve driving device2 Jun 2026US 12,644,267 B2Kohler (China) Investment Co., Ltd.
- Flush toilet16 Dec 2025US 12,497,771 B2Toto Ltd.
- Flush valve and toilet assembly7 Oct 2025US 12,435,502 B2AS America, Inc.
- Tank for toilet flushing system and manufacturing method26 Aug 2025US 12,398,549 B2Sloan Valve Company
- Pressure-assisted flush water tank24 Jun 2025US 12,338,614 B2
- Pneumatic drain valve driving device17 Sep 2026US 2026/0275694 A1Kohler (China) Investment Co., Ltd.
- Wall-hung flush toilet9 Jul 2026US 2026/0193874 A1Toto Ltd.
- Flush toilet5 Mar 2026US 2026/0062904 A1Toto Ltd.
- WC Device With a WC Body Having a Porous Inner Surface27 Feb 2025US 2025/0067037 A1Viega Technology GmbH & Co. KG
- Cover system for a toilet tank16 Jan 2025US 2025/0019953 A1Kohler Co.
Most cited
By later US patents
- Modular bidet, cartridge based liquid dispenser and blow-dryer system45US 7,543,339 B12009
- Modular cartridge based liquid dispenser system for toilets and bidets30US 8,095,997 B22012
- Water closets28US 4,162,548 ACelanese Corporation · 1979
- Toilet tank assembly23US 6,237,164 B12001
- Toilet tank top with easy access to drop in deodorizing discs22US 6,651,260 B12003