B29L 2031/755
Membranes, diaphragms
Official title: {Membranes, diaphragms}
B29L2031/755 (Membranes, diaphragms) appears on 315 US grants and 361 published applications in this corpus.
Search patents in B29L- Granted patents
- 315
- Published applications
- 361
- Assignees
- 261
- Inventors
- 820
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 2 | 4 |
| 2003 | 3 | 8 |
| 2004 | 7 | 5 |
| 2005 | 1 | 10 |
| 2006 | 3 | 11 |
| 2007 | 3 | 5 |
| 2008 | 4 | 7 |
| 2009 | 0 | 14 |
| 2010 | 7 | 12 |
| 2011 | 7 | 14 |
| 2012 | 10 | 9 |
| 2013 | 9 | 12 |
| 2014 | 13 | 18 |
| 2015 | 3 | 29 |
| 2016 | 18 | 48 |
| 2017 | 17 | 29 |
| 2018 | 19 | 23 |
| 2019 | 24 | 15 |
| 2020 | 21 | 13 |
| 2021 | 13 | 19 |
| 2022 | 12 | 19 |
| 2023 | 11 | 15 |
| 2024 | 15 | 10 |
| 2025 | 10 | 8 |
| 2026 | 4 | 4 |
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.
- Method of manufacturing solid electrolyte membrane, method of manufacturing all-solid-state battery, apparatus for manufacturing solid electrolyte membrane, and apparatus for manufacturing all-solid-state battery4 Aug 2026US 12,700,619 B2National University Corporation Kyoto Institute of Technology
- Pin designs for high COF polymer membranes or separator membranes, membrane or separator tension measuring, and related methods5 May 2026US 12,617,144 B2Celgard, LLC
- Resin joined body manufacturing method17 Feb 2026US 12,552,108 B2Asahi Yukizai Corporation
- Microlayer membranes, improved battery separators, and related methods11 Nov 2025US 12,466,119 B2Celgard, LLC
- Microlayer membranes, improved battery separators, and related methods3 Sep 2026US 2026/0257410 A1Celgard, LLC
- Sealing diaphragm and methods of manufacturing said diaphragm7 May 2026US 2026/0126036 A1Blue-White Industries, Ltd.
- Biaxially oriented membranes from double layer, oil filled sheets19 Mar 2026US 2026/0077546 A1Amtek Research International LLC
- Polyolefin Separator and Method for Manufacturing the Same12 Feb 2026US 2026/0045637 A1LG Chem.Ltd.
- Recycled roof board9 Oct 2025US 2025/0312946 A1Carlisle Construction Materials, LLC
Most cited
By later US patents
- Pump diaphragm169US 5,349,896 AW. L. Gore & Associates, Inc. · 1994
- Devices for potting a filter for blood processing166US 6,702,561 B2NxStage Medical, Inc. · 2004
- Hollow fiber membranes and method of manufacture123US 5,762,798 AMinntech Corporation · 1998
- Flow through ion selective electrode122US 4,600,495 AMedtronic, Inc. · 1986
- Flow through ion selective electrode121US 4,565,665 AMedtronic, Inc. · 1986