Patent US3042728A successfully refreshed from Google Patents.
US3042728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of ethylene dichloride
Assignee: Union Carbide Corp
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Filing: 1960-04-15
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Granted: 1962-07-03
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Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Donald H Hirsh
- 👤 Charles E Hodges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/15; C07C17/152; C07C17/156; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN THE PRODUCTION OF ETHYLENE DICHLORIDE IN A CYCLIC OPERATION BY THE REACTION OF ETHYLENE, HYDROGEN CHLORIDE AND OXYGEN, THE IMPROVEMENT WHICH COMPRISES SCRUBBING THE EFFLUENT GAS FROM THE REACTOR WITH DIMETHYL PHTHALATE PRIOR TO RECYCLING THE STREAM TO THE REACTOR.
Claim 2
Dependent Claim
41 words
IN THE PRODUCTION OF ETHYLENE DICHLORIDE IN A CYCLIC OPERATION BY THE REACTION OF ETHYLENE, HYDROGEN CHLORIDE AND OXYGEN, THE IMPROVEMENT WHICH COMPRISES SCRUBBING THE EFFLUENT GAS FROM THE REACTOR WITH DIMETHYL PHTHALATE PRIOR TO RECYCLING THE STREAM TO THE REACTOR.
References Cited (Backward Citations)
US2575167A
Cited
US2838578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |