Patent US2945058A successfully refreshed from Google Patents.
US2945058A
Expired / Lapsed
US
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Manufacture of crotonic acid
Assignee: Eastman Kodak Co
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Filing: 1957-09-11
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Granted: 1960-07-12
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Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Richard M Watson
- 👤 Gaylord K Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:55
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE PRODUCTION OF CROTONIC ACID COMPRISING THE OXIDATION OF CROTONALDEHYDE IN THE ABSENCE OF AN ADDED CATALYST BY INCORPORATING A MIXTURE OF CROTONALDEHYDE AND WATER WHICH CONTAINS 5-15% WATER IN AN INERT SOLVENT SELECTED FROM THE CLASS CONSISTING OF HEXANE, HEPTANE AND TOLUENE SO THAT 20-60% OF THE RESULTING LIQUID BY WEIGHT IS THE INERT SOLVENT, AND CONTACTING WITH AN OXYGEN CONTAINING GAS HAVING 1-25% MOLECULAR OXYGEN AT A TEMPERATURE OF 15-25*C.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE PRODUCTION OF CROTONIC ACID COMPRISING THE OXIDATION OF CROTONALDEHYDE IN THE ABSENCE OF AN ADDED CATALYST BY INCORPORATING A MIXTURE OF CROTONALDEHYDE AND WATER WHICH CONTAINS 5-15% WATER IN AN INERT SOLVENT SELECTED FROM THE CLASS CONSISTING OF HEXANE, HEPTANE AND TOLUENE SO THAT 20-60% OF THE RESULTING LIQUID BY WEIGHT IS THE INERT SOLVENT, AND CONTACTING WITH AN OXYGEN CONTAINING GAS HAVING 1-25% MOLECULAR OXYGEN AT A TEMPERATURE OF 15-25*C.
References Cited (Backward Citations)
US1413235A
Cited
US2377584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |