US3655336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the catalytic production of hydroxyl-ammonium salts
Assignee: Bayer AG
•
Filing: 1969-10-15
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Granted: 1972-04-11
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Expires: 1989-10-15
Abstract
Abstract Improvement in the process of reacting nitric oxide and hydrogen in an acid reaction medium in the presence of a catalyst of the platinum group which is suspended on graphite, active carbon or a mixture thereof wherein the process is carried out in the presence of carbon dioxide to improve the selectivity of the catalyst for hydroxyl ammonium salt production.
Inventors
- 👤 Heinz Heine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/14; C01B21/1409; C01B21/1418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
The process of claim 1 wherein a carbon dioxide containing synthesis gas is employed.
Claim 2
Dependent Claim
23 words
The process of claim 2 wherein said synthesis gas contains CO2 in an amount of from about 0.01 to 2 percent by volume.
References Cited (Backward Citations)
US3133790A
Cited
FR1508715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |