H01M 50/457
Comprising three or more layers
Official title: comprising three or more layers
H01M50/457 (Comprising three or more layers) appears on 954 US grants and 1,769 published applications in this corpus.
Search patents in H01M- Granted patents
- 954
- Published applications
- 1,769
- Assignees
- 388
- Inventors
- 2,863
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 9 |
| 2002 | 14 | 12 |
| 2003 | 9 | 13 |
| 2004 | 5 | 11 |
| 2005 | 4 | 17 |
| 2006 | 4 | 7 |
| 2007 | 6 | 24 |
| 2008 | 3 | 8 |
| 2009 | 3 | 20 |
| 2010 | 15 | 21 |
| 2011 | 17 | 42 |
| 2012 | 14 | 47 |
| 2013 | 20 | 52 |
| 2014 | 25 | 72 |
| 2015 | 32 | 84 |
| 2016 | 43 | 88 |
| 2017 | 64 | 91 |
| 2018 | 58 | 66 |
| 2019 | 83 | 102 |
| 2020 | 86 | 104 |
| 2021 | 63 | 91 |
| 2022 | 61 | 80 |
| 2023 | 60 | 169 |
| 2024 | 65 | 186 |
| 2025 | 86 | 216 |
| 2026 | 55 | 137 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dry-process polyethylene membranes, coated membranes, separators, and related methods6 Oct 2026US 12,756,068 B2Celgard, LLC
- System and method for a self-protecting separator for a battery6 Oct 2026US 12,756,070 B2GM Global Technology Operations LLC
- Separator and preparation method thereof, secondary battery and device29 Sep 2026US 12,749,765 B2Contemporary Amperex Technology (Hong Kong) Limited
- Multi-layer battery separator for alkaline battery and method for making22 Sep 2026US 12,744,286 B2SWM Holdings US, LLC
- Battery cell, battery apparatus, power consuming apparatus, and energy storage apparatus1 Sep 2026US 12,725,786 B1Contemporary Amperex Technology Co., Limited
- Cohesively bonded, microporous multilayer films8 Oct 2026US 2026/0307378 A1Amtek Research International LLC
- Lithium Secondary Battery Having Excellent Thermal Safety And Method For Manufacturing The Same8 Oct 2026US 2026/0312232 A1LG Energy Solution, Ltd.
- Electrochemical cells with ionic sequestration provided by porous separators1 Oct 2026US 2026/0302323 A1Sepion Technologies, Inc.
- All-solid-state battery1 Oct 2026US 2026/0302384 A1Honda Motor Co., Ltd.
- Single-ion electrolytes for solid-state alkaline batteries24 Sep 2026US 2026/0291007 A1The Government of the United States of America, as represented by the Secretary of the Navy
Most cited
By later US patents
- Protective coating for separators for electrochemical cells199US 6,183,901 B2Moltech Corporation · 2001
- Separator for a high energy rechargeable lithium battery178US 6,432,586 B1Celgard, LLC · 2002
- Protective coating for separators for electrochemical cells115US 6,277,514 B1Moltech Corporation · 2001
- Protective coating for separators for electrochemical cells100US 6,194,098 B1Moltech Corporation · 2001
- Compliant seal structures for protected active metal anodes99US 7,824,806 B2PolyPlus Battery Company · 2010