B01D 2239/0677
By spot-welding
Official title: by spot-welding
B01D2239/0677 (By spot-welding) appears on 36 US grants and 39 published applications in this corpus.
Search patents in B01D- Granted patents
- 36
- Published applications
- 39
- Assignees
- 42
- Inventors
- 138
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 4 |
| 2004 | 2 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 4 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 5 |
| 2022 | 1 | 4 |
| 2023 | 0 | 2 |
| 2024 | 1 | 4 |
| 2025 | 1 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air purification filter and air purifier including same9 Sep 2025US 12,409,458 B2LG Electronics Inc.
- Filter with electrically-conductive wrap3 Sep 2024US 12,076,668 B2Pall Corporation
- Multi-stage nasal filter29 Mar 2022US 11,285,345 B2
- Cardiopulmonary bypass circuit including a filtration device15 Sep 2015US 9,132,225 B2Brightwake Limited
- Multi-layered filter web26 Aug 2014US 8,814,972 B2Mahle International GmbH
- Filter assemblies utilizing full cross-section21 May 2026US 2026/0138067 A1Atmus Filtration IP Inc.
- Filter medium and method of production thereof7 May 2026US 2026/0126021 A1Neenah Gessner GmbH
- Ultrasonically bonded composite materials4 Sep 2025US 2025/0276263 A1DelStar Technologies, Inc.
- Ultrasonically bonded electret filter media20 Mar 2025US 2025/0090985 A1DelStar Technologies, Inc.
- Filter, method for manufacturing filter, and gas generator13 Feb 2025US 2025/0050259 A1Fuji Filter Manufacturing Co., Ltd.
Most cited
By later US patents
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Deformable well screen218US 6,012,522 AShell Oil Company · 2000
- Fibrous structures containing immobilized particulate matter181US 5,486,410 AHoechst Celanese Corporation · 1996
- Fibrous structures containing particulate and including microfiber web102US 5,605,746 AHoechst Celanese Corporation · 1997
- Fibrous filtration face mask having corrugated polymeric microfiber filter layer86US 5,656,368 AMinnesota Mining and Manufacturing Company · 1997