Patent US2525530A successfully refreshed from Google Patents.
US2525530A
Expired / Lapsed
US
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Method for producing vinyl trifluoroacetate
Assignee: Eastman Kodak Co
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Filing: 1946-03-14
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Granted: 1950-10-10
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Expires: 1966-03-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Dickey
- 👤 Theodore E Stanin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:48
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR PREPARING VINYL TRIFLUOROACETATE WHICH COMPRISES REACTING ACETYLENE LWITH TRIFLUOROACETIC ACID IN THE PRESENCE OF A CATALYST CONSISTING OF MERCURIC OXIDE, OLEUM AND ACETIC ACID, THEN ADDTING ANHYDROUS SODIUM ACETATE TO THE REACTION MIXLTURE AND SEPARATING THE VINYL TRIFLUOROACETATE BY FRACTIONAL DISTILLATION OF THE MIXTURE.
Claim 2
Dependent Claim
47 words
A PROCESS FOR PREPARING VINYL TRIFLUOROACETATE WHICH COMPRISES REACTING ACETYLENE LWITH TRIFLUOROACETIC ACID IN THE PRESENCE OF A CATALYST CONSISTING OF MERCURIC OXIDE, OLEUM AND ACETIC ACID, THEN ADDTING ANHYDROUS SODIUM ACETATE TO THE REACTION MIXLTURE AND SEPARATING THE VINYL TRIFLUOROACETATE BY FRACTIONAL DISTILLATION OF THE MIXTURE.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |