US2476655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of sulfonic acid amides and a method of preparing the same
Assignee: Alliant Defense Electronics Systems Inc
•
Filing: 1941-06-24
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Granted: 1949-07-19
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Expires: 1961-06-24
Abstract
No abstract record available.
Inventors
- 👤 Fox Hermann
- 👤 Diedrich Paul
- 👤 Dohrn Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:58
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/70; C07D213/71; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/69
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2045888A
Cited
USRE19286E
Cited
FR843073A
Cited
GB509804A
Cited
US2316825A
Cited
US2216515A
Cited
US2259222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |