US3374274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of aromatic thiols and aromatic sulfides
Assignee: Phillips Petroleum Co
•
Filing: 1964-09-15
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Granted: 1968-03-19
•
Expires: 1984-09-15
Abstract
No abstract record available.
Inventors
- 👤 James D Spainhour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:20
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR THE PREPARATION OF AN AROMATIC THIOL AND AN AROMATIC SULFIDE WHICH COMPRISES REACTING A NUCLEAR MONOHALO-SUBSTITUTED AROMATIC COMPOUND WITH AN EXCESS OF AN ALKALI METAL MONOSULFIDE IN A POLAR ORGANIC SOLVENT SELECTED FROM N-METHYL-2-PYRROLIDONE, PYRROLIDONE CAPROLACTAM, N-ETHYL-CAPROLACTUAM, DIMETHYLACETAMIDE, TETRAMETHYLUREA, HEXAMETHYLPHOSPHORAMIDE, AND N,N''-ETHYLENEDIPYRROLIDONE AT AN ELEVATED TEMPERATURE FOR A TIME SUFFICIENT TO CARRY OUT SAID REACTION.
Claim 2
Dependent Claim
58 words
A PROCESS FOR THE PREPARATION OF AN AROMATIC THIOL AND AN AROMATIC SULFIDE WHICH COMPRISES REACTING A NUCLEAR MONOHALO-SUBSTITUTED AROMATIC COMPOUND WITH AN EXCESS OF AN ALKALI METAL MONOSULFIDE IN A POLAR ORGANIC SOLVENT SELECTED FROM N-METHYL-2-PYRROLIDONE, PYRROLIDONE CAPROLACTAM, N-ETHYL-CAPROLACTUAM, DIMETHYLACETAMIDE, TETRAMETHYLUREA, HEXAMETHYLPHOSPHORAMIDE, AND N,N''-ETHYLENEDIPYRROLIDONE AT AN ELEVATED TEMPERATURE FOR A TIME SUFFICIENT TO CARRY OUT SAID REACTION.
References Cited (Backward Citations)
US2949487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |