US2628259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making vinylidene chloride and vinyl chloride
Assignee: Dow Chemical Co
•
Filing: 1947-11-06
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Granted: 1953-02-10
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Expires: 1967-11-06
Abstract
No abstract record available.
Inventors
- 👤 Philip H Dirstine
- 👤 Eldred L Dance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:17
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS OF MAKING VINYLIDENE CHLORIDE AND VINYL CHLORIDE, WHICH COMPRISES ADDING CHLORINE AND AN INERT DILUENT GAS OR VAPOR TO A HYDROCARBON GAS CONSISTING OF ETHANE OR A MIXTURE OF ETHANE AND ETHYLENE CONTAINING MORE THAN 50 PER CENT OF ETHANE, THE MOL RATIO OF CHLORINE TO HYDROCARBON BEING IN ACCORDANCE WITH THE FORMULA,
Claim 2
Dependent Claim
55 words
A PROCESS OF MAKING VINYLIDENE CHLORIDE AND VINYL CHLORIDE, WHICH COMPRISES ADDING CHLORINE AND AN INERT DILUENT GAS OR VAPOR TO A HYDROCARBON GAS CONSISTING OF ETHANE OR A MIXTURE OF ETHANE AND ETHYLENE CONTAINING MORE THAN 50 PER CENT OF ETHANE, THE MOL RATIO OF CHLORINE TO HYDROCARBON BEING IN ACCORDANCE WITH THE FORMULA,
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |