US3320255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thioethers
Assignee: Union Rheinische Braunkohlen Kraftstoff AG
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Filing: 1963-05-24
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Granted: 1967-05-16
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Cevat-Kalav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:08
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C335/00; C07C335/30; C07C335/32; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/42; C08; C08G; C08G75/00; C08G75/02; C08G75/14; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR PRODUCING THIOETHERS WHICH COMPRISES REACTING IN LIQUID PHASE AN ORGANIC N-METHYLOL COMPOUND WITH HYDROGEN SULFIDE IN THE PRESENCE OF HYDROCHLORIC ACID AT A TEMPERATURE OF BETWEEN 0 TO 100*C. AND RECOVERING THE THUS FORMED THIOETHER FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
42 words
A PROCESS FOR PRODUCING THIOETHERS WHICH COMPRISES REACTING IN LIQUID PHASE AN ORGANIC N-METHYLOL COMPOUND WITH HYDROGEN SULFIDE IN THE PRESENCE OF HYDROCHLORIC ACID AT A TEMPERATURE OF BETWEEN 0 TO 100*C. AND RECOVERING THE THUS FORMED THIOETHER FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US2356604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |