US3125607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification op vinyl chloride
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:31
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PURIFICATION OF VINYL CHLORIDE CONTAINING MINOR AMOUNTS OF BUTADIENE WHICH COMPRISES INTIMATELY CONTACTING SAID VINYL CHLORIDE IN THE LIQUID PHASE WITH CHLORINE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT -20*C. TO ABOUT 0*C., THE AMOUNT OF CHLORINE BEING SUCH THAT THE MOLE RATIO OF CHLORINE TO BUTADIENE CONTAINED IN SAID VINYL CHLORIDE IS FROM ABOUT 1:1 TO ABOUT 5:1, AND RECOVERING SAID VINYL CHLORIDE.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PURIFICATION OF VINYL CHLORIDE CONTAINING MINOR AMOUNTS OF BUTADIENE WHICH COMPRISES INTIMATELY CONTACTING SAID VINYL CHLORIDE IN THE LIQUID PHASE WITH CHLORINE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT -20*C. TO ABOUT 0*C., THE AMOUNT OF CHLORINE BEING SUCH THAT THE MOLE RATIO OF CHLORINE TO BUTADIENE CONTAINED IN SAID VINYL CHLORIDE IS FROM ABOUT 1:1 TO ABOUT 5:1, AND RECOVERING SAID VINYL CHLORIDE.
References Cited (Backward Citations)
US2446123A
Cited
US2616883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |