H01M 50/417
Polyolefins
H01M50/417 (Polyolefins) appears on 2,235 US grants and 3,662 published applications in this corpus.
Search patents in H01M- Granted patents
- 2,235
- Published applications
- 3,662
- Assignees
- 786
- Inventors
- 5,769
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 13 | 0 |
| 1981 | 12 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 14 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 15 | 0 |
| 1997 | 23 | 0 |
| 1998 | 25 | 0 |
| 1999 | 19 | 0 |
| 2000 | 23 | 0 |
| 2001 | 13 | 14 |
| 2002 | 30 | 36 |
| 2003 | 30 | 68 |
| 2004 | 35 | 40 |
| 2005 | 20 | 49 |
| 2006 | 24 | 54 |
| 2007 | 20 | 36 |
| 2008 | 20 | 36 |
| 2009 | 13 | 72 |
| 2010 | 29 | 61 |
| 2011 | 37 | 129 |
| 2012 | 42 | 85 |
| 2013 | 51 | 135 |
| 2014 | 74 | 137 |
| 2015 | 74 | 157 |
| 2016 | 101 | 175 |
| 2017 | 108 | 229 |
| 2018 | 139 | 177 |
| 2019 | 166 | 221 |
| 2020 | 170 | 229 |
| 2021 | 129 | 200 |
| 2022 | 135 | 190 |
| 2023 | 121 | 308 |
| 2024 | 153 | 313 |
| 2025 | 167 | 302 |
| 2026 | 99 | 209 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solvent free separators6 Oct 2026US 12,756,066 B2Amtek Research International LLC
- Dry-process polyethylene membranes, coated membranes, separators, and related methods6 Oct 2026US 12,756,068 B2Celgard, LLC
- Separator and a method for manufacturing thereof6 Oct 2026US 12,756,069 B2BenQ Materials Corporation
- Nonaqueous electrolyte secondary battery porous layer29 Sep 2026US 12,749,707 B2Sslm Co., Ltd.
- Energy storage device and method of assembly of an energy storage device29 Sep 2026US 12,749,719 B2Nanyang Technological University
- 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.
- Separator for Power Storage Device1 Oct 2026US 2026/0302530 A1Asahi Kasei Battery Separator Corporation
- Method of manufacturing separator for rechargeable battery, separator for rechargeable battery, and rechargeable battery including the same24 Sep 2026US 2026/0291005 A1Samsung SDI.Co., Ltd.
Most cited
By later US patents
- Stabilized anode for lithium-polymer batteries363US 5,648,187 AMoltech Corporation · 1997
- Separator for a high energy rechargeable lithium battery178US 6,432,586 B1Celgard, LLC · 2002
- Non-aqueous secondary battery135US 5,707,756 AFuji Photo Film Co., Ltd. · 1998
- Articles having a polymeric shell and method for preparing same111US 5,443,727 AMinnesota Mining and Manufacturing Company · 1995
- Puncture-resistant polyolefin membranes110US 6,096,213 A3M Innovative Properties Company · 2000