US2668178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homosulfanilamide salts of benzalthiosemicarbazones
Assignee: Schenley Industries Inc
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Filing: 1952-01-14
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Granted: 1954-02-02
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Expires: 1972-01-14
Abstract
No abstract record available.
Inventors
- 👤 Behnisch Robert
- 👤 Mietzsch Fritz
- 👤 Schmidt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
ALKALINE-REACTING AMINOALKYL-BENZENSULFONAMIDE SALTS OF ACID-REACTING SUBSTITUTED BENZALTHIOSEMICARBAZONES WHEREIN THE AMINOALKYLBENZENESULFONAMIDE MOIETY IS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
16 words
ALKALINE-REACTING AMINOALKYL-BENZENSULFONAMIDE SALTS OF ACID-REACTING SUBSTITUTED BENZALTHIOSEMICARBAZONES WHEREIN THE AMINOALKYLBENZENESULFONAMIDE MOIETY IS REPRESENTED BY 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) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |