Method and apparatus for manufacturing nitrogen tetroxide
US12172890B1 · kind B1 · utility
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7Claims
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Key dates
| Filing date | Dec 22, 2021 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Feb 24, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Dinitrogen tetroxide (N2O4) is synthesized in an apparatus by the reaction of concentrated nitric acid with copper. Oxygen is applied as a carrier gas to convert NO to NO2, and water vapor is removed with a tube dryer. A molecular sieve is applied to reduce and remove impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.