E03D 9/038
Passive dispensers, i.e. without moving parts
Official title: {Passive dispensers, i.e. without moving parts}
E03D9/038 (Passive dispensers, i.e. without moving parts) appears on 144 US grants and 75 published applications in this corpus.
Search patents in E03D- Granted patents
- 144
- Published applications
- 75
- Assignees
- 46
- Inventors
- 195
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 14 | 0 |
| 1985 | 11 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 4 | 1 |
| 2004 | 1 | 1 |
| 2005 | 3 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 5 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 3 | 2 |
| 2015 | 0 | 2 |
| 2016 | 1 | 1 |
| 2017 | 3 | 4 |
| 2018 | 0 | 3 |
| 2019 | 2 | 6 |
| 2020 | 3 | 4 |
| 2021 | 3 | 5 |
| 2022 | 4 | 4 |
| 2023 | 4 | 6 |
| 2024 | 6 | 5 |
| 2025 | 3 | 5 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Toilet water treament4 Jun 2026US 2026/0152936 A1Kohler Co.
- Flush architecture sanitation platform21 May 2026US 2026/0139464 A1
- Automatic toilet cleaning device5 Feb 2026US 2026/0035898 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
- Toilet cleaner controller device34US 5,881,396 A1999
- Chemical dispenser safety hanger33US 4,455,692 AThe Drackett Company · 1984
- Water closet additive means31US 3,953,902 AColgate-Palmolive Company · 1976