US3781227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for hydrogenation of nitro-compounds and a method of producing same
Assignee: Individual
•
Filing: 1971-01-15
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Granted: 1973-12-25
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Expires: 1991-01-15
Abstract
Abstract A CATALYST FOR THE HYDROGENATION OF NITRO-COMPOUNDS WHICH IS COMPRISED OF A NICKEL-ALUMINUM ALLOY PROMOTED WITH A METAL OR MIXTURES OF METALS OF GROUP VIII AND CONTAINING AN ADDITION OF A METAL OF THE GROUP II. A METHOD OF PRODUCING SAID CATALYST COMPRISING ALLOYING NICKEL AND ALUMINUM WITH A METAL OR MIXTURES OF METALS OF GROUP VIII AND A METAL OF GROUP II WITH THE SUBSEQUENT LEACHING OF 3-5 WT. PERCENT OF ALUMINUM FROM THE ALLOY OBTAINED. THE PRESENT CATALYST EXHIBITS HIGH STABILITY, IS CAPABLE OF A PROLONGED AND CONTINUOUS SERVICE LIFE, PROVIDING AN 80-100% YIELD OF THE DESIRED PRODUCTS.
Inventors
- 👤 D Sokolsky
- 👤 E Fokin
- 👤 V Livanov
- 👤 E Mazin
- 👤 N Scheglov
- 👤 G Zakumbaeva
- 👤 K Zhubanov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:49
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78; B01J23/89; B01J23/892; B01J25/00; B01J25/02; C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C213/00; C07C213/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |