Patent US2562988A successfully refreshed from Google Patents.
US2562988A
Expired / Lapsed
US
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Nitro-and thiocyano-substituted thiophene compounds
Assignee: Texaco Inc
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Filing: 1948-12-18
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Granted: 1951-08-07
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Expires: 1968-12-18
Abstract
No abstract record available.
Inventors
- 👤 Rush F Mccleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:43
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
MONOCYCLIC THIOPHENE COMPOUNDS CONTAINING A THIOCYANO GROUP SUBSTITUTED ON THE 2-POSITION, A NITRO GROUP SUBSTITUTED ON THE 3-POSITION, A GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND THE NITRO GROUP NITRO SUBSTITUTED ON THE 4-POSITION, AND A GROUP SELECTED FROM THE CLASS CONSISTING OF CHLORINE AND THE THIOCYANO GROUP ON THE 5-POSITION.
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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |