Patent FR775736A successfully refreshed from Google Patents.
Patent US3149171A successfully refreshed from Google Patents.
US3149171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of chloroprene
Assignee: Monsanto Co
•
Filing: 1960-01-04
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Granted: 1964-09-15
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Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Robert P Arganbright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C17/00; C07C17/093; C07C17/15; C07C17/158
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR THE PRODUCTION OF CHLOROPRENE WHICH COMPRISES REACTING A 2-CHLOROBUTENE WITH HYDROGEN CHLORIDE AND OXYGEN IN THE PRESENCE OF A CATALYST CONSISTING OF MAGNESIUM CHLORIDE SUPPORTED UPON PUMICE AT A TEMPERATURE ABOVE ABOUT 450*C.
Claim 2
Dependent Claim
36 words
A PROCESS FOR THE PRODUCTION OF CHLOROPRENE WHICH COMPRISES REACTING A 2-CHLOROBUTENE WITH HYDROGEN CHLORIDE AND OXYGEN IN THE PRESENCE OF A CATALYST CONSISTING OF MAGNESIUM CHLORIDE SUPPORTED UPON PUMICE AT A TEMPERATURE ABOVE ABOUT 450*C.
References Cited (Backward Citations)
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Cited
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US2395314A
Cited
US2602021A
Cited
AT180421B
Cited
US2803679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |