B01D 29/56
In series connection
Official title: in series connection
B01D29/56 (In series connection) appears on 1,159 US grants and 1,214 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,159
- Published applications
- 1,214
- Assignees
- 660
- Inventors
- 2,362
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 12 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 14 | 0 |
| 1990 | 16 | 0 |
| 1991 | 10 | 0 |
| 1992 | 12 | 0 |
| 1993 | 18 | 0 |
| 1994 | 14 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 25 | 0 |
| 1998 | 20 | 0 |
| 1999 | 25 | 0 |
| 2000 | 23 | 0 |
| 2001 | 22 | 13 |
| 2002 | 37 | 28 |
| 2003 | 30 | 34 |
| 2004 | 19 | 29 |
| 2005 | 15 | 25 |
| 2006 | 23 | 23 |
| 2007 | 17 | 22 |
| 2008 | 10 | 19 |
| 2009 | 8 | 30 |
| 2010 | 11 | 28 |
| 2011 | 21 | 28 |
| 2012 | 25 | 42 |
| 2013 | 23 | 48 |
| 2014 | 28 | 42 |
| 2015 | 28 | 75 |
| 2016 | 31 | 56 |
| 2017 | 48 | 68 |
| 2018 | 43 | 80 |
| 2019 | 63 | 67 |
| 2020 | 64 | 85 |
| 2021 | 62 | 64 |
| 2022 | 50 | 73 |
| 2023 | 51 | 57 |
| 2024 | 63 | 70 |
| 2025 | 34 | 67 |
| 2026 | 40 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Automatic swimming pool cleaners especially adept at climbing and cleaning pool stairs29 Sep 2026US 12,747,605 B2Zodiac Pool Systems LLC
- Recovery tank22 Sep 2026US 12,740,683 B2SharkNinja Operating LLC
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Two stage filter cartridge with an expandable frame facilitating replacement of the filter media1 Sep 2026US 12,722,105 B2Nanodocks Technology Limited
- Filter arrangements for liquids and methods of use1 Oct 2026US 2026/0295475 A1Donaldson Company, Inc.
- Filter device for removing particles from a liquid24 Sep 2026US 2026/0284560 A1Mst Nl B.V.
- Vortical cross-flow filtration system10 Sep 2026US 2026/0263971 A1Cleanr Inc.
- Modular system for filter containers10 Sep 2026US 2026/0263975 A1
- Filter cartridge27 Aug 2026US 2026/0250158 A1Gopala AG
Most cited
By later US patents
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Environmentally friendly filter cartridge275US 5,685,985 ABaldwin Filters, Inc. · 1997
- Deformable well screen218US 6,012,522 AShell Oil Company · 2000
- Open flow filter with safety element214US 6,416,561 B1Nelson Industries, Inc. · 2002
- Multi-element cylindrical filter with equalized flow185US 6,511,599 B2Nelson Industries, Inc. · 2003