Patent US2550439A successfully refreshed from Google Patents.
US2550439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated organic compounds
Assignee: EIDP Inc
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Filing: 1950-01-20
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Granted: 1951-04-24
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Expires: 1970-01-20
Abstract
No abstract record available.
Inventors
- 👤 Robert L Adelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
C; C07; C07C; C07C69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE PROCESS WHICH COMPRISES REACTING A VINYL ESTER IN THE PRESENCE OF A MERCURIC SALT OF A STRONG ACID WITH AN ORGANIC COMPOUND HAVING THE GROUP -CH, WHICH COMPOUND IS CAPABLE OF REACTING WITH AN ALKALI METAL ALCOHOLATE TO REPLACE THE HYDROGEN ATOM OF SAID GROUP WITH ALKALI METAL.
Claim 2
Dependent Claim
49 words
THE PROCESS WHICH COMPRISES REACTING A VINYL ESTER IN THE PRESENCE OF A MERCURIC SALT OF A STRONG ACID WITH AN ORGANIC COMPOUND HAVING THE GROUP -CH, WHICH COMPOUND IS CAPABLE OF REACTING WITH AN ALKALI METAL ALCOHOLATE TO REPLACE THE HYDROGEN ATOM OF SAID GROUP WITH ALKALI METAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |