B29L 2031/3468
Batteries, accumulators or fuel cells
Official title: {Batteries, accumulators or fuel cells (battery cases B29L2031/7146)}
B29L2031/3468 (Batteries, accumulators or fuel cells) appears on 490 US grants and 760 published applications in this corpus.
Search patents in B29L- Granted patents
- 490
- Published applications
- 760
- Assignees
- 346
- Inventors
- 1,613
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 10 | 10 |
| 2003 | 6 | 13 |
| 2004 | 4 | 14 |
| 2005 | 4 | 12 |
| 2006 | 5 | 17 |
| 2007 | 1 | 7 |
| 2008 | 6 | 16 |
| 2009 | 3 | 26 |
| 2010 | 20 | 14 |
| 2011 | 12 | 11 |
| 2012 | 10 | 11 |
| 2013 | 9 | 18 |
| 2014 | 11 | 37 |
| 2015 | 11 | 38 |
| 2016 | 23 | 46 |
| 2017 | 30 | 64 |
| 2018 | 33 | 43 |
| 2019 | 38 | 32 |
| 2020 | 41 | 32 |
| 2021 | 30 | 40 |
| 2022 | 22 | 39 |
| 2023 | 35 | 65 |
| 2024 | 38 | 49 |
| 2025 | 33 | 57 |
| 2026 | 24 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Battery module end plate, battery module, and preparation method for battery module end plate15 Sep 2026US 12,738,586 B2Contemporary Amperex Technology (Hong Kong) Limited
- Electrode calendering with rollers having controllable sleeves18 Aug 2026US 12,712,176 B2GM Global Technology Operations LLC
- Manufacture of a thermoplastic heat exchanger18 Aug 2026US 12,712,220 B2Sogefi Air & Cooling USA, Inc.
- Pouch-shaped battery sealing apparatus including position adjustment unit and pouch-shaped battery sealing method using the same18 Aug 2026US 12,712,227 B2LG Energy Solution, Ltd.
- Apparatus for sealing battery case and secondary battery manufactured using the same11 Aug 2026US 12,706,322 B2LG Energy Solution, Ltd.
- Microlayer membranes, improved battery separators, and related methods3 Sep 2026US 2026/0257410 A1Celgard, LLC
- Microporous shapes and processes for manufacture thereof3 Sep 2026US 2026/0257430 A1Board of Regents, The University of Texas System
- Manufacture of dry electrodes for batteries using a solvent free paste20 Aug 2026US 2026/0245859 A1Automotive Cells Company SE
- Pouch sealing device and pouch sealing method20 Aug 2026US 2026/0246030 A1LG Energy Solution, Ltd.
- Method for producing a dry film, rolling device, dry film, and substrate coated with the dry film13 Aug 2026US 2026/0235523 A1Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
Most cited
By later US patents
- Magnetic field alignment of emulsions to produce porous articles64US 10,675,819 B2Massachusetts Institute of Technology · 2020
- Process for forming multilayer articles by melt extrusion47US 6,503,432 B1E. I. Du Pont de Nemours and Company · 2003
- Apparatus for producing enveloped battery plates43US 4,026,000 AGlobe-Union Inc. · 1977
- Battery plate envelope machine and method of making battery plate envelopes42US 4,080,727 ATiegel Manufacturing Company · 1978
- Multilayer structure including an active electrochemical material and ionic polymer in a electrochemical cell39US 6,986,967 B2E. I. Du Pont de Nemours and Company · 2006