E03D 9/033
Devices placed inside or dispensing into the cistern
Official title: {Devices placed inside or dispensing into the cistern}
E03D9/033 (Devices placed inside or dispensing into the cistern) appears on 270 US grants and 156 published applications in this corpus.
Search patents in E03D- Granted patents
- 270
- Published applications
- 156
- Assignees
- 81
- Inventors
- 424
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 18 | 0 |
| 1985 | 13 | 0 |
| 1986 | 5 | 0 |
| 1987 | 11 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 0 |
| 2002 | 5 | 5 |
| 2003 | 6 | 4 |
| 2004 | 5 | 8 |
| 2005 | 4 | 4 |
| 2006 | 4 | 3 |
| 2007 | 0 | 9 |
| 2008 | 1 | 1 |
| 2009 | 1 | 9 |
| 2010 | 1 | 3 |
| 2011 | 3 | 6 |
| 2012 | 4 | 5 |
| 2013 | 4 | 4 |
| 2014 | 5 | 3 |
| 2015 | 2 | 5 |
| 2016 | 2 | 4 |
| 2017 | 4 | 10 |
| 2018 | 1 | 9 |
| 2019 | 9 | 7 |
| 2020 | 6 | 9 |
| 2021 | 7 | 8 |
| 2022 | 8 | 6 |
| 2023 | 6 | 10 |
| 2024 | 8 | 6 |
| 2025 | 4 | 11 |
| 2026 | 8 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrochemical cell26 May 2026US 12,637,370 B2Imperial College Innovations Limited
- Clean toilet and accessories26 May 2026US 12,637,851 B2Kohler Co.
- Dissolver for cleaning tablet in water tank of toilet12 May 2026US 12,624,538 B2Lab (Xiamen) Sanitary Fittings Inc.
- Clean toilet and accessories21 Apr 2026US 12,607,000 B2Kohler Co.
- Toilet tank cleaning solution dispenser24 Feb 2026US 12,559,924 B2
- Electrochemical cell8 Oct 2026US 2026/0308024 A1Imperial College Innovations Limited
- Clean toilet and accessories10 Sep 2026US 2026/0266036 A1Kohler Co.
- Device for cleaning a toilet bowl13 Aug 2026US 2026/0234922 A1Toibot Ltd.
- Toilet water treament4 Jun 2026US 2026/0152936 A1Kohler Co.
- Flush architecture sanitation platform21 May 2026US 2026/0139464 A1
Most cited
By later US patents
- Self-cleaning toilet56US 4,183,105 A1980
- Method and apparatus for cleansing and disinfecting a flushing toilet45US 4,216,027 AThe Procter & Gamble Company · 1980
- Dispenser suspension means employing planar spring-loaded detent45US 4,436,269 AThe Procter & Gamble Company · 1984
- Automatic cleaning assembly for a toilet bowl42US 6,321,392 B1Xitec Systems · 2001
- Toilet cleaner controller device34US 5,881,396 A1999