Patent US549006A successfully refreshed from Google Patents.
Patent US2640084A successfully refreshed from Google Patents.
US2640084A
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US
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Dehydrogenation catalyst and process
Assignee: Union Carbide Corp
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Filing: 1951-04-26
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Granted: 1953-05-26
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Expires: 1971-04-26
Abstract
No abstract record available.
Inventors
- 👤 Henry C Chitwood
- 👤 John T Fitzpatrick
- 👤 George W Fowler
- 👤 Benjamin T Freure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:17
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/06; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J27/00; B01J27/02; B01J27/053; B01J27/055; C07C37/07; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A PROCESS FOR PRODUCING A PHENOL BY CATALYTIC DEHYDROGENATION OF THE CORRESPONDING OXYGENATED HYDROAROMATIC COMPOUND WHICH COMPRISES PASSING THE OXYGENATED HYDROAROMATIC COMPOUND IN THE VAPOR PHASE OVER A STABILIZED HYDROGENATION CATALYST AT A TEMPERATURE OF ABOUT 350* TO 375* C., SAID CATALYST CONSISTING ESSENTIALLY OF NICKEL; COPPER, MOSTLY IN THE FORM OF METALLIC COPPER; CHROMIUM, MOSTLY IN THE FORM OF ITS OXIDE; AND AN ALKALI METAL SULFATE OF THE GROUP CONSISTING OF LITHIUM SULFATE, SODIUM SULFATE, POTASSIUM SULFATE, RUBIDIUM SULFATE, AND CAESIUM SULFATE; SAID COPPER AND CHROMIUM BEING PRESENT IN A RATIO OF ABOUT 15 TO 40 PARTS OF COPPER AND ABOUT 0.5 TO 4 PARTS OF CHROMIUM PER 100 PARTS OF NICKEL, COMPUTED ON A METAL BASIS BY WEIGHT; AND SAID ALKALI METAL SULFATE BEING PRESENT IN A RATIO OF AT LEAST 0.3 PART PER 100 PARTS OF NICKEL, BY WEIGHT, AND NOT MORE THAN 0.8 PART OF LITHIUM SULFATE; 0.8 PART OF SODIUM SULFATE; 1.0 PART OF POTASSIUM SULFATE; 1.5 PARTS OF RUBIDIUM SULFATE; AND 2.0 PARTS OF CAESIUM SULFATE, ALL PER 100 PARTS OF NICKEL BY WEIGHT WITH A TOTAL ALKALI METAL SULFATE CONTENT NOT TO EXCEED 0.33 GRAM-MOL PER 100 GRAM ATOMS OF NICKEL.
Claim 2
Dependent Claim
198 words
A PROCESS FOR PRODUCING A PHENOL BY CATALYTIC DEHYDROGENATION OF THE CORRESPONDING OXYGENATED HYDROAROMATIC COMPOUND WHICH COMPRISES PASSING THE OXYGENATED HYDROAROMATIC COMPOUND IN THE VAPOR PHASE OVER A STABILIZED HYDROGENATION CATALYST AT A TEMPERATURE OF ABOUT 350* TO 375* C., SAID CATALYST CONSISTING ESSENTIALLY OF NICKEL; COPPER, MOSTLY IN THE FORM OF METALLIC COPPER; CHROMIUM, MOSTLY IN THE FORM OF ITS OXIDE; AND AN ALKALI METAL SULFATE OF THE GROUP CONSISTING OF LITHIUM SULFATE, SODIUM SULFATE, POTASSIUM SULFATE, RUBIDIUM SULFATE, AND CAESIUM SULFATE; SAID COPPER AND CHROMIUM BEING PRESENT IN A RATIO OF ABOUT 15 TO 40 PARTS OF COPPER AND ABOUT 0.5 TO 4 PARTS OF CHROMIUM PER 100 PARTS OF NICKEL, COMPUTED ON A METAL BASIS BY WEIGHT; AND SAID ALKALI METAL SULFATE BEING PRESENT IN A RATIO OF AT LEAST 0.3 PART PER 100 PARTS OF NICKEL, BY WEIGHT, AND NOT MORE THAN 0.8 PART OF LITHIUM SULFATE; 0.8 PART OF SODIUM SULFATE; 1.0 PART OF POTASSIUM SULFATE; 1.5 PARTS OF RUBIDIUM SULFATE; AND 2.0 PARTS OF CAESIUM SULFATE, ALL PER 100 PARTS OF NICKEL BY WEIGHT WITH A TOTAL ALKALI METAL SULFATE CONTENT NOT TO EXCEED 0.33 GRAM-MOL PER 100 GRAM ATOMS OF NICKEL.
References Cited (Backward Citations)
US2291585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |