H01M 50/489
Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their
Official title: Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
H01M50/489 (Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their) appears on 3,097 US grants and 5,037 published applications in this corpus.
Search patents in H01M- Granted patents
- 3,097
- Published applications
- 5,037
- Assignees
- 1,027
- Inventors
- 7,733
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 8 | 0 |
| 1978 | 15 | 0 |
| 1979 | 11 | 0 |
| 1980 | 28 | 0 |
| 1981 | 33 | 0 |
| 1982 | 29 | 0 |
| 1983 | 14 | 0 |
| 1984 | 13 | 0 |
| 1985 | 10 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 8 | 0 |
| 1989 | 14 | 0 |
| 1990 | 9 | 0 |
| 1991 | 16 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 18 | 0 |
| 1995 | 20 | 0 |
| 1996 | 23 | 0 |
| 1997 | 33 | 0 |
| 1998 | 29 | 0 |
| 1999 | 26 | 0 |
| 2000 | 24 | 0 |
| 2001 | 35 | 22 |
| 2002 | 34 | 45 |
| 2003 | 36 | 53 |
| 2004 | 35 | 36 |
| 2005 | 16 | 57 |
| 2006 | 22 | 76 |
| 2007 | 17 | 77 |
| 2008 | 19 | 52 |
| 2009 | 23 | 93 |
| 2010 | 56 | 105 |
| 2011 | 57 | 142 |
| 2012 | 66 | 131 |
| 2013 | 63 | 180 |
| 2014 | 80 | 184 |
| 2015 | 104 | 234 |
| 2016 | 121 | 203 |
| 2017 | 164 | 276 |
| 2018 | 183 | 249 |
| 2019 | 225 | 285 |
| 2020 | 219 | 283 |
| 2021 | 182 | 259 |
| 2022 | 153 | 268 |
| 2023 | 172 | 404 |
| 2024 | 199 | 465 |
| 2025 | 230 | 498 |
| 2026 | 150 | 360 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-aqueous electrolyte secondary battery6 Oct 2026US 12,755,982 B2Sanyo Electric Co., Ltd.
- Garnet-type lithium-ion solid-state conductor6 Oct 2026US 12,756,004 B2Samsung Electronics Co., Ltd.
- Separator for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery6 Oct 2026US 12,756,065 B2Panasonic Energy Co., Ltd.
- Solvent free separators6 Oct 2026US 12,756,066 B2Amtek Research International LLC
- Separator for secondary battery and preparation method therefor, secondary battery, battery module, battery pack, and power consuming device6 Oct 2026US 12,756,067 B2Contemporary Amperex Technology (Hong Kong) Limited
- Battery cell and battery8 Oct 2026US 2026/0312150 A1Zhuhai Cosmx Battery Co., Ltd.
- Lithium Secondary Battery Having Excellent Thermal Safety And Method For Manufacturing The Same8 Oct 2026US 2026/0312232 A1LG Energy Solution, Ltd.
- Separator with a ceramic-comprising separator layer8 Oct 2026US 2026/0312233 A1Sila Nanotechnologies, Inc.
- Electrochemical cells with ionic sequestration provided by porous separators1 Oct 2026US 2026/0302323 A1Sepion Technologies, Inc.
- Thermal insulation sheet and method for preparing thermal insulation sheet1 Oct 2026US 2026/0302430 A13M Innovative Properties Company
Most cited
By later US patents
- Stabilized anode for lithium-polymer batteries363US 5,648,187 AMoltech Corporation · 1997
- Rechargeable lithium intercalation battery with hybrid polymeric electrolyte231US 5,296,318 ABell Communications Research, Inc. · 1994
- Protected active metal electrode and battery cell structures with non-aqueous interlayer architecture230US 7,282,295 B2PolyPlus Battery Company · 2007
- Electrochemical device separator structures with barrier layer on non-swelling membrane205US 7,070,632 B1PolyPlus Battery Company · 2006
- Separator for a high energy rechargeable lithium battery178US 6,432,586 B1Celgard, LLC · 2002