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US2985661A
Expired / Lapsed
US
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Preparation of 2(omicron-aminophenyl)-benzimidazole
Assignee: Wyeth Holdings LLC
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Filing: 1956-02-06
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Granted: 1961-05-23
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Delton W Hein
- 👤 Robert J Alheim
- 👤 Julian J Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:52
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/18; A; A01; A01N; A01N43/00; A01N43/72; A01N43/74
Claims Analysis
Total Claims: 0
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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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |