B01D 35/04
Plug, tap, or cock filters filtering elements mounted in or on a
Official title: Plug, tap, or cock filters {filtering elements mounted in or on a faucet}
B01D35/04 (Plug, tap, or cock filters filtering elements mounted in or on a) appears on 219 US grants and 166 published applications in this corpus.
Search patents in B01D- Granted patents
- 219
- Published applications
- 166
- Assignees
- 140
- Inventors
- 492
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 11 | 0 |
| 1997 | 5 | 0 |
| 1998 | 13 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 4 |
| 2003 | 4 | 8 |
| 2004 | 3 | 6 |
| 2005 | 2 | 8 |
| 2006 | 3 | 11 |
| 2007 | 3 | 0 |
| 2008 | 3 | 0 |
| 2009 | 0 | 5 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 3 |
| 2013 | 0 | 3 |
| 2014 | 2 | 1 |
| 2015 | 4 | 6 |
| 2016 | 2 | 5 |
| 2017 | 1 | 7 |
| 2018 | 2 | 14 |
| 2019 | 8 | 21 |
| 2020 | 8 | 12 |
| 2021 | 13 | 3 |
| 2022 | 12 | 11 |
| 2023 | 7 | 9 |
| 2024 | 6 | 9 |
| 2025 | 7 | 8 |
| 2026 | 1 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Faucet water purifier and filtering device for faucet water purifier19 May 2026US 12,629,618 B2
- Water purification tank and water purifier comprising same28 Oct 2025US 12,454,451 B2Coway Co., Ltd.
- Water purifier12 Aug 2025US 12,384,695 B2Coway Co., Ltd.
- Water purifier5 Aug 2025US 12,377,374 B2Coway Co., Ltd.
- Faucet water purifier and filtering device for use in faucet water purifier8 Jul 2025US 12,351,479 B2
- Shower sprayer with filter20 Aug 2026US 2026/0241407 A1
- Front loading filter showerhead and method13 Aug 2026US 2026/0233135 A1
- Air spring for vehicle6 Aug 2026US 2026/0225011 A1Hyundai Mobis Co., Ltd.
- Under-sink water purifier30 Jul 2026US 2026/0217566 A1Coway Co., Ltd.
- Water purifier23 Apr 2026US 2026/0109589 A1Coway Co., Ltd.
Most cited
By later US patents
- Water filter547US 7,143,897 B1H20 International, Inc. · 2006
- Filter with laterally removable element and valve means135US 5,397,462 AMatsushita Electric Industrial Co., Ltd. · 1995
- Water treatment device with volume totalization valve104US 5,527,451 ARecovery Engineering, Inc. · 1996
- Water filter apparatus94US 4,686,037 ATeledyne Industries, Inc. · 1987
- Water filter92US 4,504,389 AAssociated Mills, Inc. · 1985