C25C 3/14
Devices for feeding or crust breaking
C25C3/14 (Devices for feeding or crust breaking) appears on 102 US grants and 63 published applications in this corpus.
Search patents in C25C- Granted patents
- 102
- Published applications
- 63
- Assignees
- 51
- Inventors
- 202
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 7 |
| 2008 | 2 | 2 |
| 2009 | 1 | 4 |
| 2010 | 3 | 1 |
| 2011 | 3 | 3 |
| 2012 | 1 | 4 |
| 2013 | 2 | 2 |
| 2014 | 1 | 6 |
| 2015 | 4 | 2 |
| 2016 | 4 | 4 |
| 2017 | 2 | 3 |
| 2018 | 3 | 2 |
| 2019 | 2 | 2 |
| 2020 | 1 | 3 |
| 2021 | 3 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 4 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for collecting and pre-treating process gases generated by an electrolysis cell30 Dec 2025US 12,509,788 B2Elysis Limited Partnership
- Systems and methods for feeding solid material and a gas into an electrolytic cell15 Jul 2025US 12,359,329 B2Phoenix Tailings, Inc.
- Method and means for application of anode covering material (ACM) in an electrolysis cell of Hall-Heroult type for aluminium production5 Sep 2023US 11,746,432 B2Norsk Hydro ASA
- Device for controlled feeding an electrolytic cell for producing aluminum (variants)8 Jun 2021US 11,028,494 B2United Company RUSAL Engineering and Technology Centre LLC
- Systems and methods for purifying aluminum11 May 2021US 11,001,931 B2Alcoa USA Corp.
- System and method for collecting and pre-treating process gases generated by an electrolysis cell6 Aug 2026US 2026/0226642 A1Elysis Limited Partnership
- Systems and methods for feeding solid material and a gas into an electrolytic cell18 Dec 2025US 2025/0382718 A1Phoenix Tailings, Inc.
- Advanced aluminum electrolysis cell9 Jan 2025US 2025/0011958 A1Elysis Limited Partnership
- Advanced purification cell for aluminum scrap recycling5 Sep 2024US 2024/0295043 A1Alcoa USA Corp.
- Anode handling system and method of use30 May 2024US 2024/0175158 A1Alumatiq AS
Most cited
By later US patents
- Feeding particulate matter19US 4,016,053 AKaiser Aluminum & Chemical Corporation · 1977
- Apparatus and process for separating a material in fluidized bed form and the detection of clogging19US 5,299,694 AAluminum Pechiney · 1994
- Apparatus for distribution at a regulated rate of a fluidizable powdery material18US 4,692,068 AAluminium Pechiney · 1987
- Apparatus and method for efficient transfer of powdered ore16US 4,299,683 AAluminum Company of America · 1981
- Device for accurately controlled feeding of a fine-grained, free-running particulate material15US 4,473,175 ASwiss Aluminium Ltd. · 1984