A47G 21/188
With filters to remove impurities
Official title: {with filters to remove impurities}
A47G21/188 (With filters to remove impurities) appears on 25 US grants and 38 published applications in this corpus.
Search patents in A47G- Granted patents
- 25
- Published applications
- 38
- Assignees
- 22
- Inventors
- 64
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 6 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 5 |
| 2021 | 1 | 3 |
| 2022 | 3 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 3 |
| 2025 | 3 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filtration apparatus and method of use for the same7 Apr 2026US 12,593,933 B1
- Antimicrobial tubular conduits21 Oct 2025US 12,447,238 B2Sanidrink S.R.L.
- Mouthpiece9 Sep 2025US D1,092,134 S1Brita LP · Design
- Container and withdrawal system21 Jan 2025US 12,201,230 B2Brita LP
- Container and withdrawal system12 Sep 2023US 11,751,706 B2Brita LP
- Filtration apparatus and method of use for the same20 Aug 2026US 2026/0240351 A1
- Filter for drinking straw13 Aug 2026US 2026/0232123 A1AGA Imports LLC
- Filtration apparatus and method of use for the same9 Apr 2026US 2026/0096678 A1
- Straw structure12 Dec 2024US 2024/0407578 A1Timas Titan Co., Ltd.
- Container and withdrawal system25 Jan 2024US 2024/0023739 A1Brita LP
Most cited
By later US patents