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Patent US2710879A successfully refreshed from Google Patents.
US2710879A
Expired / Lapsed
US
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Synthesis of carboxylic acids
Assignee: Hercules Powder Co
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Filing: 1952-03-29
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Granted: 1955-06-14
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Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 John C Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:02
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE SYNTHESIS OF ORGANIC CARBOXYLIC ACIDS BY THE CATALYTIC ADDITION OF CARBON MONOXIDE TO AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, OLEFINS, ETHERS, AND CARBOXYLIC ACID ESTERS, WHEREIN THE REACTON IS CARRIED OUT IN THE PRESENCE OF A CATALYST CONTAINING AN ELEMENT OF THE IRON SUBGROUP AND AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BORMINE, AND IODINE, THE STEP WHICH COMPRISES CONDUCTING THE REACTION IN A REACTOR, THE INNER SURFACES OF WHICH CONSIST OF A METAL CONTAINING AT LEAST ABOUT 90% ZIRCONIUM.
Claim 2
Dependent Claim
88 words
IN THE SYNTHESIS OF ORGANIC CARBOXYLIC ACIDS BY THE CATALYTIC ADDITION OF CARBON MONOXIDE TO AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, OLEFINS, ETHERS, AND CARBOXYLIC ACID ESTERS, WHEREIN THE REACTON IS CARRIED OUT IN THE PRESENCE OF A CATALYST CONTAINING AN ELEMENT OF THE IRON SUBGROUP AND AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BORMINE, AND IODINE, THE STEP WHICH COMPRISES CONDUCTING THE REACTION IN A REACTOR, THE INNER SURFACES OF WHICH CONSIST OF A METAL CONTAINING AT LEAST ABOUT 90% ZIRCONIUM.
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) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |