Patent US2795600A successfully refreshed from Google Patents.
US2795600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitriles
Assignee: Union Carbide Corp
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Filing: 1954-06-25
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Granted: 1957-06-11
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Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Henry C Chitwood
- 👤 Benjamin T Freure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:14
CPC Classifications
C; C07; C07C; C07C255/00; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR THE PRODUCTION OF NITRILES WHICH COMPRISES REACTING IN THE VAPOR PHASE A PRIMARY ALCOHOL WITH AMMONIA AT A TEMPERATURE OF 250% C. TO 350* C. AND IN THE PRESENCE OF A CATALYST HAVING AN ESSENTIAL CONSTITUENTS THEREOF COPPER, CHROMIUM OXIDE, ACTIVATED ALUMINA AND A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, BARIUM CARBONATE, LITHIUM CARBONATE, STRONTIUM CARBONATE, BARIUM HYDROXIDE, LITHIUM HYDROXIDE AND STRONTIUM HYDROXIDE, SAID ESSENTIAL CONSTITUENTS BEING PRESENT IN THE PROPORTIONS BY WEIGHT OF FROM 3 TO 15 PERCENT OF COPPER, FROM 0.25 TO 2 PERCENT OF CHROMIUM OXIDE, FROM 1 TO 9.2 PERCENT OF SAID METAL COMPOUND AND THE BALANCE ACTIVATED ALUMINA.
Claim 2
Dependent Claim
110 words
A PROCESS FOR THE PRODUCTION OF NITRILES WHICH COMPRISES REACTING IN THE VAPOR PHASE A PRIMARY ALCOHOL WITH AMMONIA AT A TEMPERATURE OF 250% C. TO 350* C. AND IN THE PRESENCE OF A CATALYST HAVING AN ESSENTIAL CONSTITUENTS THEREOF COPPER, CHROMIUM OXIDE, ACTIVATED ALUMINA AND A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, BARIUM CARBONATE, LITHIUM CARBONATE, STRONTIUM CARBONATE, BARIUM HYDROXIDE, LITHIUM HYDROXIDE AND STRONTIUM HYDROXIDE, SAID ESSENTIAL CONSTITUENTS BEING PRESENT IN THE PROPORTIONS BY WEIGHT OF FROM 3 TO 15 PERCENT OF COPPER, FROM 0.25 TO 2 PERCENT OF CHROMIUM OXIDE, FROM 1 TO 9.2 PERCENT OF SAID METAL COMPOUND AND THE BALANCE ACTIVATED ALUMINA.
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |