B01D 2201/4038
For connecting at least two filtering elements together
Official title: for connecting at least two filtering elements together
B01D2201/4038 (For connecting at least two filtering elements together) appears on 54 US grants and 69 published applications in this corpus.
Search patents in B01D- Granted patents
- 54
- Published applications
- 69
- Assignees
- 50
- Inventors
- 154
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 3 |
| 2016 | 2 | 2 |
| 2017 | 1 | 3 |
| 2018 | 1 | 2 |
| 2019 | 2 | 3 |
| 2020 | 6 | 13 |
| 2021 | 4 | 7 |
| 2022 | 9 | 9 |
| 2023 | 12 | 5 |
| 2024 | 4 | 6 |
| 2025 | 1 | 5 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water purifying apparatus and refrigerator including the same14 Apr 2026US 12,600,646 B2LG Electronics Inc.
- Inline end engaging system30 Sep 2025US 12,428,326 B2King Technology, Inc.
- Foldable filter housing for air conditioning1 Oct 2024US 12,102,950 B1
- Modular filter element frame24 Sep 2024US 12,097,449 B2
- Filtration filter9 Apr 2024US 11,951,422 B2Murata Manufacturing Co., Ltd.
- Modular system for filter containers10 Sep 2026US 2026/0263975 A1
- In-Pipe Stormwater Treatment Unit Best Management Practice (I-STUB)21 May 2026US 2026/0138056 A1The United States of America as represented by the Secretary of the Navy
- Filter device11 Dec 2025US 2025/0375722 A1Aisan Kogyo Kabushiki Kaisha
- Fully submersed block style primary water filter4 Dec 2025US 2025/0367579 A1
- Fully submersed block style secondary water filter4 Dec 2025US 2025/0368542 A1
Most cited
By later US patents
- Separation membrane end cap44US 6,632,356 B2Dow Global Technologies LLC · 2003
- End connected filter cartridges43US 4,559,138 AHarmsco, Inc. · 1985
- Filtering apparatus with modular filter elements42US 4,105,562 ATextron Inc. · 1978
- Connector for sealing stacked filter elements41US 5,435,915 APall Corporation · 1995
- Seal arrangement for rapid interconnection or axially arranged separation elements40US 5,851,267 AUop LLC · 1998