Patent US3034853A successfully refreshed from Google Patents.
US3034853A
Expired / Lapsed
US
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Process for the removal of lower oxides of nitrogen from gaseous mixtures containing them
Assignee: Osterreichische Stickstoffwerke AG
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Filing: 1959-08-04
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Granted: 1962-05-15
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Expires: 1979-08-04
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Alfred
- 👤 Weinrotter Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:34
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/54; B01D53/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR REMOVING NITRIC OXIDE AND NITROGEN DIOXIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME, COMPRISING PASSING SAID GASEOUS MIXTURE THROUGH AN AQUEOUS ALKALINE-REACTING SUSPENSION CONTAINING AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM HYDROXIDE, MAGNESIUM CARBONATE AND BASIC MAGNESIUM CARBONATE, THEREBY REACTING THE NITROGEN OXIDES OF SAID GASEOUS MIXTURE WITH THE MAGNESIUM COMPOUND IN SAID AQUEOUS SUSPENSION AND THUS FORMING MAGNESIUM NITRITE, HEATING THE RESULTING MAGNESIUM NITRITE-CONTAINING SUSPENSION UNDER PRESSURE, THEREBY DECOMPOSING THE MAGNESIUM NITRITE WITH FORMATION OF GASEOUS NITRIC OXIDE, MAGNESIUM HYDROXIDE AND MAGNESIUM NITRATE, AND SEPARATING THE NITRIC OXIDE FROM THE RESULTING SUSPENSION OF PRECIPITATED MAGNESIUM HYDROXIDE IN MAGNESIUM NITRATE SOLUTION.
Claim 2
Dependent Claim
108 words
A PROCESS FOR REMOVING NITRIC OXIDE AND NITROGEN DIOXIDE FROM A GASEOUS MIXTURE CONTAINING THE SAME, COMPRISING PASSING SAID GASEOUS MIXTURE THROUGH AN AQUEOUS ALKALINE-REACTING SUSPENSION CONTAINING AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM HYDROXIDE, MAGNESIUM CARBONATE AND BASIC MAGNESIUM CARBONATE, THEREBY REACTING THE NITROGEN OXIDES OF SAID GASEOUS MIXTURE WITH THE MAGNESIUM COMPOUND IN SAID AQUEOUS SUSPENSION AND THUS FORMING MAGNESIUM NITRITE, HEATING THE RESULTING MAGNESIUM NITRITE-CONTAINING SUSPENSION UNDER PRESSURE, THEREBY DECOMPOSING THE MAGNESIUM NITRITE WITH FORMATION OF GASEOUS NITRIC OXIDE, MAGNESIUM HYDROXIDE AND MAGNESIUM NITRATE, AND SEPARATING THE NITRIC OXIDE FROM THE RESULTING SUSPENSION OF PRECIPITATED MAGNESIUM HYDROXIDE IN MAGNESIUM NITRATE SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |