Patent US4819114A successfully refreshed from Google Patents.
Patent US2692881A successfully refreshed from Google Patents.
US2692881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzothiazole derivatives
Assignee: —
•
Filing: —
•
Granted: 1954-10-26
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:55
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C07D277/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
2 - MERCAPTO - 4 - HYDROXY - BENZOTHIAZOLES CONTAINING IN THE 6-POSITION A MEMBER OF THE GROUP CONSISTING OF ANILINO, LOWER ALKYLANILINO, AND HALOANILINO RADICALS.
Claim 2
Dependent Claim
26 words
2 - MERCAPTO - 4 - HYDROXY - BENZOTHIAZOLES CONTAINING IN THE 6-POSITION A MEMBER OF THE GROUP CONSISTING OF ANILINO, LOWER ALKYLANILINO, AND HALOANILINO RADICALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |