US2697115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing lower alkyl esters of monohaloacetic acid from ketene, halogens, and alcohols
Assignee: Eastman Kodak Co
•
Filing: 1951-05-19
•
Granted: 1954-12-14
•
Expires: 1971-05-19
Abstract
No abstract record available.
Inventors
- 👤 Egbert H Clower
- 👤 Flaven E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:27
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A CONTINUOUS PROCESS OF PREPARING A LOWER ALKYL MONOHALOACETATE, WHICH COMPRISES REACTING KETENE WITH A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE VAPOR PHASE TO GIVE A MONOHALOACETYL HALIDE WHILE HOLDING THE TEMPERATURE BELOW 150* C. BY REFRIGERATION, MAINTAINING THE MONOHALOACETYL HALIDE THUS FORMED IN THE VAPOR PHASE, AND REACTING IT, IN ANOTHER PORTION OF THE SAME APPARATUS, WITH A LOWER ALIPHATIC MONOHYDRIC ALCOHOL IN VAPOR FORM.
Claim 2
Dependent Claim
72 words
A CONTINUOUS PROCESS OF PREPARING A LOWER ALKYL MONOHALOACETATE, WHICH COMPRISES REACTING KETENE WITH A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE IN THE VAPOR PHASE TO GIVE A MONOHALOACETYL HALIDE WHILE HOLDING THE TEMPERATURE BELOW 150* C. BY REFRIGERATION, MAINTAINING THE MONOHALOACETYL HALIDE THUS FORMED IN THE VAPOR PHASE, AND REACTING IT, IN ANOTHER PORTION OF THE SAME APPARATUS, WITH A LOWER ALIPHATIC MONOHYDRIC ALCOHOL IN VAPOR FORM.
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |