Patent US4829834A successfully refreshed from Google Patents.
US3083231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of mercaptans
Assignee: Phillips Petroleum Co
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Filing: 1960-07-01
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Granted: 1963-03-26
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Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:48
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A PROCESS FOR THE PRODUCTION OF A MERCAPTAN COMPRISING THE CATALYTIC REACTION OF AN OLEFIN WITH HYDROGEN SULFIDE IN A REACTION ZONE, SEPARATING UNREACTED H2S FROM THE EFFECT FROM SAID REACTION ZONE IN A FIRST SEPARATION ZONE, PASSING A MERCAPTAN CONTAINING STEAM FROM SAID FIRST SEPARATION ZONE TO A SECOND SEPARATION ZONE WHEREIN UNREACTED OLEFINS ARE SEPARATED FROM SAID MERCAPTAN CONTAINING STREAM, PASSING SAID MERCAPTAN CONTAINING STEAM TO A FRACTIONATIN ZONE, REMOVING A MERCAPTAN STEAM FROM THE UPPER REGION OF SAID FRACTIONATION ZONE, AND WITHDRAWING A BOTOMS PRODUCT FROM SAID FRACTIONATION ZONE; AN IMPROVEMENT CONSISTING OF RECYCLING SAID BOTTOMS PRODUCT TO SAID REACTION ZONE.
Claim 2
Dependent Claim
105 words
IN A PROCESS FOR THE PRODUCTION OF A MERCAPTAN COMPRISING THE CATALYTIC REACTION OF AN OLEFIN WITH HYDROGEN SULFIDE IN A REACTION ZONE, SEPARATING UNREACTED H2S FROM THE EFFECT FROM SAID REACTION ZONE IN A FIRST SEPARATION ZONE, PASSING A MERCAPTAN CONTAINING STEAM FROM SAID FIRST SEPARATION ZONE TO A SECOND SEPARATION ZONE WHEREIN UNREACTED OLEFINS ARE SEPARATED FROM SAID MERCAPTAN CONTAINING STREAM, PASSING SAID MERCAPTAN CONTAINING STEAM TO A FRACTIONATIN ZONE, REMOVING A MERCAPTAN STEAM FROM THE UPPER REGION OF SAID FRACTIONATION ZONE, AND WITHDRAWING A BOTOMS PRODUCT FROM SAID FRACTIONATION ZONE; AN IMPROVEMENT CONSISTING OF RECYCLING SAID BOTTOMS PRODUCT TO SAID REACTION ZONE.
References Cited (Backward Citations)
US2211990A
Cited
US2951875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |