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Patent US2558547A successfully refreshed from Google Patents.
US2558547A
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Catalytic processes for ester-ester interchange
Assignee: Individual
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Filing: 1949-01-11
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Granted: 1951-06-26
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Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Eddy W Eekey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:50
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/04; C11C3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE PROCESS OF CATELYTICALLY EFFECTING ESTERESTER INTERCHANGE BETWEEN ORGANIC ESTERS UNDER NON-ACID CONDITIONS, THE STEPS OF CONTACTING SAID ESTERS IN SUBSTANTIALLY DRY CONDITION AT A TEMPERATURE NOT SUBSTANTIALLY EXCEEDING 120* C. IN THE PRESENCE OF FROM 0.03 PER CENT TO NOT SUBSTANTIALLY MORE THAN ONE PER CENT BY WEIGHT OF FINELY DIVIDED AND SUSPENDED ALKALI METAL HYDRIDE, THE SAID AMOUNT OF HYDRIDE AND SAID TEMPERATURE BEING SUFFICIENT TO PROMOTE ESTER-ESTER INTERCHANGE WITHOUT SUBSTANTIAL CONDENSATION OF SAID ESTERS.
Claim 2
Dependent Claim
78 words
IN THE PROCESS OF CATELYTICALLY EFFECTING ESTERESTER INTERCHANGE BETWEEN ORGANIC ESTERS UNDER NON-ACID CONDITIONS, THE STEPS OF CONTACTING SAID ESTERS IN SUBSTANTIALLY DRY CONDITION AT A TEMPERATURE NOT SUBSTANTIALLY EXCEEDING 120* C. IN THE PRESENCE OF FROM 0.03 PER CENT TO NOT SUBSTANTIALLY MORE THAN ONE PER CENT BY WEIGHT OF FINELY DIVIDED AND SUSPENDED ALKALI METAL HYDRIDE, THE SAID AMOUNT OF HYDRIDE AND SAID TEMPERATURE BEING SUFFICIENT TO PROMOTE ESTER-ESTER INTERCHANGE WITHOUT SUBSTANTIAL CONDENSATION OF SAID ESTERS.
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) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |