Patent FR1531972A successfully refreshed from Google Patents.
US3213091A
Expired / Lapsed
US
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Mercaptoethylation of amines with ethylene monothiolcarbonate
Assignee: Eastman Kodak Co
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Filing: 1961-04-26
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Granted: 1965-10-19
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Delbert D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D295/16; C07D295/20; C07D295/205; C07D327/00; C07D327/02; C07D327/04; G; G03; G03C; G03C5/00; G03C5/26; G03C5/38; G03C5/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
THE METHOD OF PRODUCING 2-MORPHOLINOETHANETHIOL WHICH CONSISTS IN CONTACTING MORE THAN ONE MOLE OF MORPHOLINE WITH ONE MOLE OF ETHYLENE MONOTHIOLCARBONATE.
Claim 2
Dependent Claim
30 words
THE PROCESS WHICH COMPRISES CONTACTING ETHYLENE MONOTHIOLCARBONATE WITH A STOICHIOMETRIC EXCESS OF AN ORGANIC AMINE SELECTED FROM THE GROUP CONSISTING OF: (A) PRIMARY ORGANIC AMINES AND (B) SECONDARY ORGANIC AMINES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |