Patent US2332808A successfully refreshed from Google Patents.
Patent US2725280A successfully refreshed from Google Patents.
US2725280A
Expired / Lapsed
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Process for manufacture of strong dinitrogen tetroxide
Assignee: Honeywell International Inc
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Filing: 1953-02-11
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Granted: 1955-11-29
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Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Anthony W Yodis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:16
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR THE MANUFACTURE OF DINITROGEN TETROXIDE WHICH COMPRISES REACTING ELEMENTAL SULFUR AND NITRIC ACID THEREBY PRODUCING AS PRIMARY REACTION PRODUCTS DINITROGEN TETROXIDE AND SULFURIC ACID TOGETHER WITH NITROSYL SULFURIC ACID, NITOSYL SULFURIC ACID ANHYDRIDE, LOWER OXIDES OF NITROGEN AND H2O AS BY PRODUCTS, RELEASING VAPORS EVOLVED FROM SAID REACTION COMPRISING PRIMARILY N204, HNO3, H2O, AND SMALL AMOUNTS OF NITROSYL SULFURIC ANHYDRIDE AND LOWER OXIDES OF NITROGEN, COOLING SAID VAPORS T EFFECT CONDENSATION OF THE H2O, AND RETURNING SAID CONDENSATE TO THE MIXTURE OF ELEMENTAL SULFUR AND NITRIC ACID UNDERGOING REACTION.
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE MANUFACTURE OF DINITROGEN TETROXIDE WHICH COMPRISES REACTING ELEMENTAL SULFUR AND NITRIC ACID THEREBY PRODUCING AS PRIMARY REACTION PRODUCTS DINITROGEN TETROXIDE AND SULFURIC ACID TOGETHER WITH NITROSYL SULFURIC ACID, NITOSYL SULFURIC ACID ANHYDRIDE, LOWER OXIDES OF NITROGEN AND H2O AS BY PRODUCTS, RELEASING VAPORS EVOLVED FROM SAID REACTION COMPRISING PRIMARILY N204, HNO3, H2O, AND SMALL AMOUNTS OF NITROSYL SULFURIC ANHYDRIDE AND LOWER OXIDES OF NITROGEN, COOLING SAID VAPORS T EFFECT CONDENSATION OF THE H2O, AND RETURNING SAID CONDENSATE TO THE MIXTURE OF ELEMENTAL SULFUR AND NITRIC ACID UNDERGOING REACTION.
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) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |