Patent US2680764A successfully refreshed from Google Patents.
US2680764A
Expired / Lapsed
US
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Preparation of alpha, beta-dichloropropionic acid esters
Assignee: GAF Chemicals Corp
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Filing: 1950-10-30
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Granted: 1954-06-08
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Expires: 1970-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Ney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:24
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/62; C07C69/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR THE PREPARATION OF AN ESTER OF A,B-DICHLOROPROPIONIC ACID, WHICH COMPRISES MIXING CHLORINE WITH THE CORRESPONDING ESTER OF ACRYLIC ACID IN THE VAPOR PHASE, AT A TEMPERATURE FROM 40 TO 200* C., AND RECOVERING A,B-DICHLOROPHORPIONIC ESTER FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
43 words
A PROCESS FOR THE PREPARATION OF AN ESTER OF A,B-DICHLOROPROPIONIC ACID, WHICH COMPRISES MIXING CHLORINE WITH THE CORRESPONDING ESTER OF ACRYLIC ACID IN THE VAPOR PHASE, AT A TEMPERATURE FROM 40 TO 200* C., AND RECOVERING A,B-DICHLOROPHORPIONIC ESTER FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
US2320034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |