B31D 5/0082
Making filter elements
Official title: {Making filter elements, e.g. pleated}
B31D5/0082 (Making filter elements) appears on 64 US grants and 41 published applications in this corpus.
Search patents in B31D- Granted patents
- 64
- Published applications
- 41
- Assignees
- 38
- Inventors
- 147
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 4 |
| 2013 | 1 | 2 |
| 2014 | 4 | 2 |
| 2015 | 0 | 2 |
| 2016 | 3 | 3 |
| 2017 | 1 | 4 |
| 2018 | 1 | 1 |
| 2019 | 4 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 3 |
| 2022 | 1 | 1 |
| 2023 | 3 | 5 |
| 2024 | 3 | 0 |
| 2025 | 2 | 2 |
| 2026 | 2 | 2 |
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.
- Pleated filter preparation system31 Mar 2026US 12,589,570 B2K&N Engineering, Inc.
- Apparatus for the manufacture of a filter for disposable capsules for the preparation of beverages27 May 2025US 12,312,112 B2Rychiger AG
- Filter manufacturing apparatus13 May 2025US 12,295,407 B2Philip Morris Products S. A.
- Pleated filter preparation system1 Oct 2024US 12,103,264 B2K&N Engineering, Inc.
- Pleated Filter Preparation System30 Jul 2026US 2026/0216986 A1K&N Engineering, Inc.
- Improved apparatus and method of manufacture for filter media assembly16 Jul 2026US 2026/0200200 A1
- Method for producing a filter element12 Jun 2025US 2025/0186917 A1
- Pleated Filter Preparation System12 Jun 2025US 2025/0187290 A1K&N Engineering, Inc.
- Apparatus For The Manufacture Of A Filter For Disposable Capsules For The Preparation Of Beverages9 Nov 2023US 2023/0356869 A1Rychiger AG
Most cited
By later US patents
- Process for the production of filters, and a filter produced by the process67US 4,976,677 AFlodins Filter AB · 1990
- Pleated filter and method and apparatus for fabricating same64US 4,594,162 AAmerican Filtrona Corporation · 1986
- Filter medium forming system and process59US 4,940,500 ATsuchiya Mfg. Co., Ltd. · 1990
- Method of forming self-supporting pleated filter media57US 7,235,115 B23M Innovative Properties Company · 2007
- Machine for manufacturing herringbone-pleated structures55US 4,012,932 AMarc Wood S.A. · 1977