US3119657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydroxylamine hydrochloride
Assignee: Millennium Petrochemicals Inc
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Filing: 1961-10-17
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Granted: 1964-01-28
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Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 Horvitz David
- 👤 Jr Herbert Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:53
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/14; C01B21/1409; C01B21/1418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR PRODUCING HYDROXYLAMINE HYDROCHLORIDE WHICH COMPRISES TREATING AN AQUEOUS REACTION MIXTURE CONTAINING NITRIC ACID IN THE RANGE OF 0.1 TO 25 PARTS BY WEIGHT OF NITRIC ACID TO 100 PARTS BY WEIGHT OF WATER, HYDROCHLORIC ACID IN THE RANGE OF 1 TO 50 PARTS BY WEIGHT OF HYDROCHLORIC ACID TO 100 PARTS BY WEIGHT OF WATER, TIN CHLORIDE IN A RANGE OF 0.5 TO 60 PARTS BY WEIGHT OF ELEMENTAL TIN TO 100 PARTS BY EIGHT OF WATER, AND AN ACTIVE HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WITH HYDROGEN AT A TEMPERATURE FROM ABOVE THE FREEZING POINT OF THE REACTION MIXTURE TO ABOUT 90*C., AND AT A PRESSURE FROM ATMOSPHERIC TO ABOUT 3000 P.S.I.G., AND RECOVERING THE HYDROXYLAMINE HYDROCHLORIDE SO PRODUCED.
Claim 2
Dependent Claim
128 words
A PROCESS FOR PRODUCING HYDROXYLAMINE HYDROCHLORIDE WHICH COMPRISES TREATING AN AQUEOUS REACTION MIXTURE CONTAINING NITRIC ACID IN THE RANGE OF 0.1 TO 25 PARTS BY WEIGHT OF NITRIC ACID TO 100 PARTS BY WEIGHT OF WATER, HYDROCHLORIC ACID IN THE RANGE OF 1 TO 50 PARTS BY WEIGHT OF HYDROCHLORIC ACID TO 100 PARTS BY WEIGHT OF WATER, TIN CHLORIDE IN A RANGE OF 0.5 TO 60 PARTS BY WEIGHT OF ELEMENTAL TIN TO 100 PARTS BY EIGHT OF WATER, AND AN ACTIVE HYDROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM WITH HYDROGEN AT A TEMPERATURE FROM ABOVE THE FREEZING POINT OF THE REACTION MIXTURE TO ABOUT 90*C., AND AT A PRESSURE FROM ATMOSPHERIC TO ABOUT 3000 P.S.I.G., AND RECOVERING THE HYDROXYLAMINE HYDROCHLORIDE SO PRODUCED.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |