US2496941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(di-substituted thiocarbamylthio-methylene) aromatic amines
Assignee: Wingfoot Corp
•
Filing: 1945-02-26
•
Granted: 1950-02-07
•
Expires: 1965-02-26
Abstract
No abstract record available.
Inventors
- 👤 Albert F Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
9 words
AS NEW COMPOSITIONS OF MATTER, THE NI-(DIALKYL THIOCARBAMYL-THIO-METHYLENE)-N-PHENYL NAPHTHYLAMINES.
References Cited (Backward Citations)
US2177547A
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US2177548A
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US2226984A
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US2325720A
Cited
US2358715A
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US2248356A
Cited
US2323940A
Cited
US2356163A
Cited
US2260380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |