US2431880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of sulfuryl chloride
Assignee: Wyeth Holdings LLC
•
Filing: 1941-05-24
•
Granted: 1947-12-02
•
Expires: 1961-05-24
Abstract
No abstract record available.
Inventors
- 👤 Merz August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:16
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/45; C01B17/4561; C01B17/4592
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1364738A
Cited
US1765688A
Cited
US1536708A
Cited
GB347644A
Cited
US2208517A
Cited
US2259248A
Cited
US2254041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |