Patent US3009779A successfully refreshed from Google Patents.
US3009779A
Expired / Lapsed
US
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Production of hydroxylamine
Assignee: BASF SE
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Filing: 1954-02-24
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Granted: 1961-11-21
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Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 Wintersberger Karl
- 👤 Jockers Kurt
- 👤 Meier Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:16
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/14; C01B21/1409; C01B21/1418; B; B01; B01J; B01J23/00; B01J23/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF HYDROXYLAMINE BY CATALYTIC REDUCTION OF NITRIC OXIDE WITH HYDROGEN IN A DILUTE ACID MEDIUM, WHICH COMPRISES USING AS A CATALYST SUSPENDED IN SAID DILUTE ACID MEDIUM A NOBLE METAL ALLOY OF PLATINUM AND ABOUT ONE TO TEN PERCENT BY WEIGHT OF A NOBLE METAL OTHER THAN PLATINUM, SAID CATALYST BEING INSOLUBLE IN THE DILUTE ACID MEDIUM.
Claim 2
Dependent Claim
63 words
AN IMPROVED PROCESS FOR THE PRODUCTION OF HYDROXYLAMINE BY CATALYTIC REDUCTION OF NITRIC OXIDE WITH HYDROGEN IN A DILUTE ACID MEDIUM, WHICH COMPRISES USING AS A CATALYST SUSPENDED IN SAID DILUTE ACID MEDIUM A NOBLE METAL ALLOY OF PLATINUM AND ABOUT ONE TO TEN PERCENT BY WEIGHT OF A NOBLE METAL OTHER THAN PLATINUM, SAID CATALYST BEING INSOLUBLE IN THE DILUTE ACID MEDIUM.
References Cited (Backward Citations)
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US2406172A
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US2628889A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |