C25C 3/08
Cell construction
Official title: Cell construction, e.g. bottoms, walls, cathodes
C25C3/08 (Cell construction) appears on 756 US grants and 423 published applications in this corpus.
Search patents in C25C- Granted patents
- 756
- Published applications
- 423
- Assignees
- 283
- Inventors
- 1,184
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 15 | 0 |
| 1978 | 20 | 0 |
| 1979 | 23 | 0 |
| 1980 | 14 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 25 | 0 |
| 1984 | 49 | 0 |
| 1985 | 42 | 0 |
| 1986 | 42 | 0 |
| 1987 | 18 | 0 |
| 1988 | 23 | 0 |
| 1989 | 13 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 5 | 0 |
| 1994 | 22 | 0 |
| 1995 | 13 | 0 |
| 1996 | 16 | 0 |
| 1997 | 13 | 0 |
| 1998 | 13 | 0 |
| 1999 | 12 | 0 |
| 2000 | 17 | 0 |
| 2001 | 14 | 9 |
| 2002 | 26 | 17 |
| 2003 | 21 | 27 |
| 2004 | 20 | 29 |
| 2005 | 10 | 23 |
| 2006 | 8 | 14 |
| 2007 | 8 | 21 |
| 2008 | 9 | 17 |
| 2009 | 6 | 12 |
| 2010 | 14 | 7 |
| 2011 | 10 | 16 |
| 2012 | 11 | 6 |
| 2013 | 9 | 19 |
| 2014 | 7 | 24 |
| 2015 | 6 | 15 |
| 2016 | 8 | 19 |
| 2017 | 10 | 13 |
| 2018 | 9 | 15 |
| 2019 | 10 | 16 |
| 2020 | 10 | 11 |
| 2021 | 17 | 11 |
| 2022 | 10 | 15 |
| 2023 | 9 | 9 |
| 2024 | 8 | 24 |
| 2025 | 11 | 20 |
| 2026 | 5 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and process for starting up an electrolytic cell4 Aug 2026US 12,698,567 B2Elysis Limited Partnership
- Method and apparatus for producing aluminum material31 Mar 2026US 12,590,378 B2Uacj Corporation
- Integrated process of pyrolysis, electrode anode production and aluminum production and joint plant31 Mar 2026US 12,590,379 B2BASF SE
- Copper-coated titanium diboride articles13 Jan 2026US 12,522,935 B2Alcoa USA Corp.
- Binder pitch for use in carbon composite materials6 Jan 2026US 12,516,247 B2Arq IP Limited
- Method of starting up an electrolytic cell for aluminum production8 Oct 2026US 2026/0308793 A1Rio Tinto Alcan International Limited
- System and method for collecting and pre-treating process gases generated by an electrolysis cell6 Aug 2026US 2026/0226642 A1Elysis Limited Partnership
- An aluminum electrolysis cell30 Jul 2026US 2026/0218405 A1Central South University
- Method and device for electro chemical refining of aluminium in cells (variants)16 Jul 2026US 2026/0201589 A1
- Scrap Aluminum Alloy Purification Process11 Jun 2026US 2026/0159977 A1Apple Inc.
Most cited
By later US patents
- Apparatus and method for the electrolytic production of metals89US 4,999,097 AMassachusetts Institute of Technology · 1991
- Non-consumable anode and lining for aluminum electrolytic reduction cell73US 5,284,562 ABrooks Rand Inc · 1994
- Refractory metal borides and composites containing them64US 4,595,545 AEltech Systems Corporation · 1986
- Aluminum reduction cell electrode63US 4,405,433 AKaiser Aluminum & Chemical Corporation · 1983
- Cermets and their manufacture63US 4,585,618 AEltech Systems Corporation · 1986