US3051695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymeric mercaptans
Assignee: Phillips Petroleum Co
•
Filing: 1959-10-12
•
Granted: 1962-08-28
•
Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Paul F Warner
- 👤 Richard D Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:32
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PREPARING A POLYMERIC MERCAPTAN WHICH COMPRISES REACTING A LIQUID DIENE POLYMER IN AN INERT LIQUID REACTION MEDIUM WITH HYDROGEN SULFIDE AT AN ELEVATED TEMPERATURE UP TO ABOUT 450*F. AND A PRESSURE SUFFICIENT TO MAINTAIN LIQUID PHASE CONDITIONS IN THE PRESENCE OF A COBALT MOLYBDATE CATALYST TO FORM SAID MERCAPTAN, AND RECOVERING SAID POLYMERIC MERCAPTAN AS A PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PREPARING A POLYMERIC MERCAPTAN WHICH COMPRISES REACTING A LIQUID DIENE POLYMER IN AN INERT LIQUID REACTION MEDIUM WITH HYDROGEN SULFIDE AT AN ELEVATED TEMPERATURE UP TO ABOUT 450*F. AND A PRESSURE SUFFICIENT TO MAINTAIN LIQUID PHASE CONDITIONS IN THE PRESENCE OF A COBALT MOLYBDATE CATALYST TO FORM SAID MERCAPTAN, AND RECOVERING SAID POLYMERIC MERCAPTAN AS A PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |