Patent US3072676A successfully refreshed from Google Patents.
US3072676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparaing ethylene monothiolcarbonate
Assignee: Eastman Kodak Co
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Filing: 1960-12-02
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Granted: 1963-01-08
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Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 Johnson Dee Lynn
- 👤 Donald L Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:37
CPC Classifications
C; C07; C07D; C07D327/00; C07D327/02; C07D327/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR PREPARING ETHYLENE MONOTHIOLCARBONATE WHICH COMPRISES HEATING AT FROM 60 TO 120*C. A MIXTURE CONSISTING ESSENTIALLY OF FROM 70.0 TO 99.5 MOLE PERCENT OF AN ALKYL 2-HYDROXYETHYL THIOLCARBONATE HAVING THE FORMULA:
Claim 2
Dependent Claim
33 words
A PROCESS FOR PREPARING ETHYLENE MONOTHIOLCARBONATE WHICH COMPRISES HEATING AT FROM 60 TO 120*C. A MIXTURE CONSISTING ESSENTIALLY OF FROM 70.0 TO 99.5 MOLE PERCENT OF AN ALKYL 2-HYDROXYETHYL THIOLCARBONATE HAVING THE FORMULA:
References Cited (Backward Citations)
US2784201A
Cited
US2828318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |