A47J 31/06
Filters or strainers for coffee or tea makers
Official title: Filters or strainers for coffee or tea makers {; Holders therefor}
A47J31/06 (Filters or strainers for coffee or tea makers) appears on 1,446 US grants and 1,808 published applications in this corpus.
Search patents in A47J- Granted patents
- 1,446
- Published applications
- 1,808
- Assignees
- 642
- Inventors
- 2,574
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 10 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 10 | 0 |
| 1989 | 20 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 17 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 22 | 0 |
| 1998 | 25 | 0 |
| 1999 | 34 | 0 |
| 2000 | 25 | 0 |
| 2001 | 23 | 7 |
| 2002 | 23 | 22 |
| 2003 | 16 | 18 |
| 2004 | 16 | 37 |
| 2005 | 11 | 43 |
| 2006 | 21 | 43 |
| 2007 | 16 | 46 |
| 2008 | 16 | 38 |
| 2009 | 14 | 45 |
| 2010 | 32 | 74 |
| 2011 | 26 | 53 |
| 2012 | 29 | 79 |
| 2013 | 36 | 58 |
| 2014 | 47 | 79 |
| 2015 | 52 | 102 |
| 2016 | 66 | 105 |
| 2017 | 79 | 104 |
| 2018 | 69 | 98 |
| 2019 | 76 | 126 |
| 2020 | 78 | 109 |
| 2021 | 77 | 107 |
| 2022 | 68 | 106 |
| 2023 | 72 | 103 |
| 2024 | 74 | 82 |
| 2025 | 56 | 63 |
| 2026 | 43 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A47J 31/0657For brewing coffee under pressure606
- A47J 31/0615With special arrangements for making tea or the like158
- A47J 31/0605With a valve at the filter-outlet137
- A47J 31/08Paper filter inlays therefor to be disposed after use130
- A47J 31/0642Specially adapted to cooperate with a cartridge126
- A47J 31/0626With means for securing the filter holder to the beverage container102
- A47J 31/0636Suspended from the top of the beverage container so as to remain96
- A47J 31/0647With means to adjust the brewing chamber volume to accommodate different quantities85
All 12 subgroupsShow fewer
- A47J 31/0631With means for better or quicker spreading the infusion liquid over the60
- A47J 31/0621With means for varying the infusion outflow velocity56
- A47J 2031/0694With indicating means to aid the measurement of ground coffee contained thereinIndexing code22
- A47J 31/0652With means to by-pass a quantity of water16
Recent patents
- Automatic portafilter clamping device for espresso machines22 Sep 2026US 12,740,665 B2
- System for making beverages15 Sep 2026US 12,733,768 B2Caffitaly System S.P.A.
- Device for preparing a dose of ground coffee powder8 Sep 2026US 12,727,704 B2DE' LONGHI APPLIANCES S.r.l.
- Capsule holder for holding a capsule8 Sep 2026US 12,727,705 B2Societe des Produits Nestle S. A.
- Beverage making apparatus8 Sep 2026US 12,727,706 B2
- Guide structure for hand drip coffee8 Oct 2026US 2026/0305863 A1A. C. Company
- Method for brewing coffee1 Oct 2026US 2026/0294157 A1Societe des Produits Nestle S. A.
- Brewing Material Container for a Beverage Brewer1 Oct 2026US 2026/0294159 A1Adrian Rivera Maynez Enterprises, Inc.
- Brewing cup24 Sep 2026US 2026/0283392 A1Qingdao Yingchuan Packaging Co., Ltd.
- Apparatus and methods for steeping tea17 Sep 2026US 2026/0272212 A1
Most cited
By later US patents
- Beverage filter cartridge443US 5,325,765 AKeurig, Incorporated · 1994
- Cartridges containing substances for beverage preparation274US 5,897,899 ANestec S. A. · 1999
- Two step puncturing and venting of single serve filter cartridge in a beverage brewer272US 6,606,938 B2Keurig, Incorporated · 2003
- Beverage filter cartridge holder266US 6,655,260 B2Keurig, Incorporated · 2003
- Apparatus for the preparation of an edible liquid263US 5,472,719 ACoffea S.A. · 1995