US3409635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of cyclic sulfur compounds
Assignee: Rohm and Haas Co
•
Filing: 1963-06-27
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Granted: 1968-11-05
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
- 👤 Lawrence J Exner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:25
CPC Classifications
C; C07; C07D; C07D331/00; C07D331/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PROCESS FOR THE PREPARATION OF CYCLIC SULFUR COMPOUNDS, WHICH COMPRISES REACTING IN THE TEMPERATURE RANGE OF ABOUT 0* TO 50*C. CARBON DISULFIDE WITH A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
29 words
A PROCESS FOR THE PREPARATION OF CYCLIC SULFUR COMPOUNDS, WHICH COMPRISES REACTING IN THE TEMPERATURE RANGE OF ABOUT 0* TO 50*C. CARBON DISULFIDE WITH A COMPOUND HAVING THE FORMULA
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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |