US3282960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propylene monothiocarbonate and processes for making and using the same
Assignee: ATK Launch Systems LLC
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Filing: 1964-09-29
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Granted: 1966-11-01
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Broderick Edward
- 👤 Villa Jose Luis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
C; C07; C07D; C07D331/00; C07D331/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
A METHOD OF MAKING PROPYLENE MONOTHIOCARBONATE WHICH COMPRISES REACTING PROPYLENE OXIDE AND CARBONYL SULFIDE AT A TEMPERATURE BETWEEN ABOUT 30*C. AND 90* C. IN THE PRESENCE OF A BASIC CATALYST OF THE FORMULA
Claim 2
Independent Claim
33 words
A METHOD OF MAKING PROPYLENE MONOTHIOCARBONATE WHICH COMPRISES REACTING PROPYLENE OXIDE AND CARBONYL SULFIDE AT A TEMPERATURE BETWEEN ABOUT 30*C. AND 90* C. IN THE PRESENCE OF A BASIC CATALYST OF THE FORMULA
Claim 3
Dependent Claim
37 words
A METHOD ACCORDING TO CLAIM 1 AND WHEREIN THE PROPYLENE MONOTHIOCARBONATE PRODUCED IS HEATED AT A TEMPERATURE BETWEEN 140* AND 210*C. TO FORM PROPYLENE SULFIDE AND CARBON DIOXIDE, AND SAID PROPYLENE SULFIDE IS RECOVERED AS A PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |