H01M 50/429
Natural polymers
H01M50/429 (Natural polymers) appears on 555 US grants and 857 published applications in this corpus.
Search patents in H01M- Granted patents
- 555
- Published applications
- 857
- Assignees
- 360
- Inventors
- 1,903
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 11 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 11 | 1 |
| 2002 | 11 | 13 |
| 2003 | 7 | 12 |
| 2004 | 7 | 7 |
| 2005 | 5 | 15 |
| 2006 | 7 | 6 |
| 2007 | 5 | 8 |
| 2008 | 1 | 8 |
| 2009 | 5 | 17 |
| 2010 | 8 | 12 |
| 2011 | 6 | 27 |
| 2012 | 11 | 31 |
| 2013 | 8 | 32 |
| 2014 | 24 | 38 |
| 2015 | 18 | 47 |
| 2016 | 21 | 46 |
| 2017 | 26 | 69 |
| 2018 | 42 | 56 |
| 2019 | 48 | 72 |
| 2020 | 34 | 61 |
| 2021 | 36 | 44 |
| 2022 | 40 | 38 |
| 2023 | 23 | 47 |
| 2024 | 40 | 61 |
| 2025 | 24 | 50 |
| 2026 | 12 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water based polyimide-powder coating composition and method for manufacturing composite separator for lithium secondary battery using same29 Sep 2026US 12,749,769 B2University Industry Foundation, Yonsei University Wonju Campus
- Alkali metal ion-conductive solid electrolyte, method for producing same, separator for nonaqueous electrolyte secondary batteries, method for producing said separator for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery22 Sep 2026US 12,744,244 B2Panasonic Intellectual Property Management Co., Ltd.
- Multi-layer battery separator for alkaline battery and method for making22 Sep 2026US 12,744,286 B2SWM Holdings US, LLC
- Oxidized bacterial cellulose separator for batteries and method for producing the same8 Sep 2026US 12,731,858 B2Arizona Board of Regents on behalf of Arizona State University
- Laminated oxidation protected separator18 Aug 2026US 12,712,210 B2Daramic, LLC
- Oxidized bacterial cellulose separator for batteries and method for producing the same1 Oct 2026US 2026/0302532 A1Arizona Board of Regents on behalf of Arizona State University
- Composite separator and lithium battery27 Aug 2026US 2026/0254057 A1Eve Energy Co., Ltd.
- Ceramic cation exchange materials13 Aug 2026US 2026/0233171 A1Membrion, Inc.
- Separators with Ion-Exchange Layers and Electrochemical Cells Comprising Such Separators13 Aug 2026US 2026/0237847 A1Zelos Energy Ltd.
- Separators with Ion-Exchange Layers and Electrochemical Cells Comprising Such Separators13 Aug 2026US 2026/0237857 A1Zelos Energy Ltd.
Most cited
By later US patents
- Ionic semiconductor materials and applications thereof795US 5,055,171 AT and G Corporation · 1991
- Articles having a polymeric shell and method for preparing same111US 5,443,727 AMinnesota Mining and Manufacturing Company · 1995
- Polyethylene separator for energy storage cell97US 6,242,127 B1Microporous Products, L.P. · 2001
- Batteries including improved fine fiber separators85US 7,112,389 B1E. I. Du Pont de Nemours and Company · 2006
- Hydrophilic polymer treatment of an activated polymeric material and use thereof72US 6,830,782 B22004