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Patent US2511028A successfully refreshed from Google Patents.
US2511028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-[(para-aminophenyl) alkyl] cyclo-hexylamine
Assignee: EIDP Inc
•
Filing: 1947-12-04
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Granted: 1950-06-13
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Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Gerald M Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:28
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
A 4-((PARA-AMINOPHENYL) ALKYL)CYCLOHEXYLAMINE.
Claim 2
Dependent Claim
3 words
A 4-((PARA-AMINOPHENYL) ALKYL)CYCLOHEXYLAMINE.
References Cited (Backward Citations)
US1661293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |