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US2514219A
Expired / Lapsed
US
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1,3,6-thiadiazepine-2-thiones and their production
Assignee: Bridgestone Firestone Inc
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Filing: 1949-03-30
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Granted: 1950-07-04
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Expires: 1969-03-30
Abstract
No abstract record available.
Inventors
- 👤 James A Shotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:36
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/36; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A 3,6-DISUBSTITUTED 1,3,6-THIADIAZEPHINE-2THIONE HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A 3,6-DISUBSTITUTED 1,3,6-THIADIAZEPHINE-2THIONE HAVING THE FORMULA
References Cited (Backward Citations)
US2170059A
Cited
US2236389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |