B29L 2031/14
Filters
Official title: Filters {(optical filters B29L2011/0066, sieves or screens B29L2031/737)}
B29L2031/14 (Filters) appears on 539 US grants and 459 published applications in this corpus.
Search patents in B29L- Granted patents
- 539
- Published applications
- 459
- Assignees
- 352
- Inventors
- 1,057
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 14 | 0 |
| 1988 | 9 | 0 |
| 1989 | 10 | 0 |
| 1990 | 12 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 17 | 0 |
| 1999 | 12 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 6 |
| 2002 | 15 | 21 |
| 2003 | 8 | 17 |
| 2004 | 22 | 16 |
| 2005 | 7 | 13 |
| 2006 | 7 | 13 |
| 2007 | 10 | 11 |
| 2008 | 6 | 31 |
| 2009 | 5 | 8 |
| 2010 | 6 | 19 |
| 2011 | 11 | 23 |
| 2012 | 12 | 20 |
| 2013 | 10 | 25 |
| 2014 | 19 | 18 |
| 2015 | 23 | 34 |
| 2016 | 19 | 35 |
| 2017 | 9 | 28 |
| 2018 | 23 | 18 |
| 2019 | 34 | 15 |
| 2020 | 19 | 20 |
| 2021 | 13 | 19 |
| 2022 | 9 | 14 |
| 2023 | 12 | 12 |
| 2024 | 16 | 17 |
| 2025 | 9 | 5 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Formed sheet membrane element and filtration system4 Aug 2026US 12,697,586 B2Fibracast Ltd.
- Filtration device23 Jun 2026US 12,661,618 B2Gambro Lundia AB
- Flat membrane element and method for producing same13 Jan 2026US 12,521,679 B2Kubota Corporation
- Die, die assembly, equipment and method for forming rods of fibrous material25 Nov 2025US 12,479,174 B2British American Tobacco (Investments) Limited
- Potting apparatus for a gas exchanger7 Oct 2025US 12,434,411 B2Xenios AG
- Method of manufacturing a filter unit for an air purifying respirator and such a filter unit27 Aug 2026US 2026/0249530 A1Tiki Safety AB
- Ultrasonic weldment assembly2 Oct 2025US 2025/0303645 A1IDEXX Laboratories, Inc.
- Filter and method7 Aug 2025US 2025/0249296 A1Moldex-Metric, Inc.
- Printed porous structure, method and apparatus for production thereof30 Jan 2025US 2025/0032998 A1Cytiva Sweden AB
- Devices, systems, processes, and methods relating to 3d printers comprising pressurized resin production of three-dimensional target objects30 Jan 2025US 2025/0033284 A1Kinetic 3D LLC
Most cited
By later US patents
- Thin-wall polytetrafluoroethylene tube232US 6,027,779 AW. L. Gore & Associates, Inc. · 2000
- Devices for potting a filter for blood processing166US 6,702,561 B2NxStage Medical, Inc. · 2004
- Process for making hermetically sealed filter units and filters made thereby163US 4,113,627 AFiltertek Inc. · 1978
- Infuser unit for making beverages136US 5,913,964 AEspire Incorporated · 1999
- Thin-wall polytetrafluoroethylene tube106US 6,025,044 AW. L. Gore & Associates, Inc. · 2000