B01D 69/1212
Coextruded layers
Official title: {Coextruded layers}
B01D69/1212 (Coextruded layers) appears on 78 US grants and 77 published applications in this corpus.
Search patents in B01D- Granted patents
- 78
- Published applications
- 77
- Assignees
- 72
- Inventors
- 259
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 3 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 4 |
| 2011 | 1 | 5 |
| 2012 | 3 | 6 |
| 2013 | 1 | 3 |
| 2014 | 5 | 0 |
| 2015 | 2 | 5 |
| 2016 | 2 | 3 |
| 2017 | 4 | 8 |
| 2018 | 1 | 6 |
| 2019 | 9 | 7 |
| 2020 | 2 | 2 |
| 2021 | 2 | 6 |
| 2022 | 2 | 3 |
| 2023 | 2 | 4 |
| 2024 | 1 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hollow fiber membranes with polydiorganosiloxane polyoxamide copolymer skin layer and methods of making and using the same24 Feb 2026US 12,558,654 B23M Innovative Properties Company
- Microlayer membranes, improved battery separators, and methods of manufacture and use7 Jan 2025US 12,191,441 B2Celgard, LLC
- Separator for rechargeable battery and lithium rechargeable battery comprising same10 Sep 2024US 12,087,966 B2Samsung SDI.Co., Ltd.
- Microlayer membranes, improved battery separators, and methods of manufacture and use10 Oct 2023US 11,784,344 B2Celgard, LLC
- Method for filtering protein-containing liquid28 Feb 2023US 11,590,452 B2Asahi Kasei Medical Co., Ltd.
- Dual-layer hollow fibre membrane27 Aug 2026US 2026/0249249 A1Divigas Pet Ltd
- Process for the preparation of sterile products12 Jun 2025US 2025/0186636 A1CMED AESTHETICS s.r.l.
- Microlayer membranes, improved battery separators, and methods of manufacture and use1 May 2025US 2025/0140898 A1Celgard, LLC
- Advanced carbon molecular sieve membranes derived from composite polyimide hollow fiber precursors17 Apr 2025US 2025/0121333 A1Georgia Tech Research Corporation
- Methods of manufacturing green bodies and substrates26 Sep 2024US 2024/0317648 A1
Most cited
By later US patents
- Novel multicomponent fluid separation membranes140US 5,085,676 AE. I. Du Pont de Nemours and Company · 1992
- Dialyzing membrane with adsorbent layer122US 4,267,047 AAkzo N.V. of Arnhem/Nederland · 1981
- Composite membrane for facilitated transport processes117US 5,082,472 A1992
- Method of making controlled porosity expanded polytetrafluoroethylene products94US 5,433,909 AAtrium Medical Corporation · 1995
- Fibrous web for processing a fluid77US 6,074,869 APall Corporation · 2000