E03D 2201/30
Water injection in siphon for enhancing flushing
E03D2201/30 (Water injection in siphon for enhancing flushing) appears on 163 US grants and 184 published applications in this corpus.
Search patents in E03D- Granted patents
- 163
- Published applications
- 184
- Assignees
- 60
- Inventors
- 353
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 4 |
| 2004 | 4 | 3 |
| 2005 | 0 | 7 |
| 2006 | 4 | 5 |
| 2007 | 2 | 3 |
| 2008 | 2 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 5 |
| 2011 | 3 | 5 |
| 2012 | 4 | 7 |
| 2013 | 2 | 5 |
| 2014 | 5 | 1 |
| 2015 | 5 | 8 |
| 2016 | 6 | 8 |
| 2017 | 6 | 11 |
| 2018 | 10 | 12 |
| 2019 | 13 | 5 |
| 2020 | 7 | 13 |
| 2021 | 11 | 14 |
| 2022 | 10 | 19 |
| 2023 | 18 | 13 |
| 2024 | 11 | 4 |
| 2025 | 7 | 18 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-head fluidic oscillators4 Aug 2026US 12,698,623 B2Kohler Co.
- Flush toilet28 Apr 2026US 12,612,773 B2Toto Ltd.
- Fluid connector for toilet6 Jan 2026US 12,516,516 B2Kohler Co.
- Flushing method for toilet, and flushing toilet7 Oct 2025US 12,435,500 B2
- Flush valve and toilet assembly7 Oct 2025US 12,435,502 B2AS America, Inc.
- Toilet with dual nozzle and distribution plate18 Jun 2026US 2026/0168226 A1Kohler Co.
- Toilet11 Jun 2026US 2026/0160054 A1Shanghai Kohler Electronics, Ltd.
- Flush toilet28 May 2026US 2026/0146429 A1Toto Ltd.
- Flush toilet apparatus28 May 2026US 2026/0146430 A1Toto Ltd.
- Fluid connector for toilet2 Apr 2026US 2026/0092440 A1Kohler Co.
Most cited
By later US patents
- Water closet flushing apparatus71US 5,315,719 AToto Ltd. · 1994
- Water closet flushing apparatus50US 5,133,089 AToto Ltd. · 1992
- Siphon-jet flush water supply system for toilet stool47US 5,502,845 AToto Ltd. · 1996
- Flush water supply system for toilet stool46US 5,052,060 AToto Ltd. · 1991
- Flush toilet43US 6,145,138 AToto Ltd. · 2000