Century Aluminum Company (CENX)
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 20264 patents granted to the 2 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Century Aluminum Company’s names, not what it holds today.
0 published
0 published
| Granted | Patent | Title | Field | Owner as printed |
|---|---|---|---|---|
| May 19, 2009 | 7,534,328 | Electrodes useful for molten salt electrolysis of aluminum oxide to aluminum | Surface technology, coating | Century Aluminum Company |
| Nov 28, 2006 | 7,141,149 | Electrodes useful for molten salt electrolysis of aluminum oxide to aluminum | Surface technology, coating | Century Aluminum Company |
| Sep 17, 2002 | 6,450,480 | Bake carbon flue straightener | Thermal processes and apparatus | Century Aluminum Company |
| Mar 13, 2001 | 6,199,277 | Bake carbon flue straightener | Thermal processes and apparatus | Century Aluminum of West Virginia, Inc. |
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.