Patent US5427077A successfully refreshed from Google Patents.
US2966488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted alkylaminopurines
Assignee: Individual
•
Filing: 1956-07-30
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Granted: 1960-12-27
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Shive William
- 👤 Charles G Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:43
CPC Classifications
C; C07; C07D; C07D473/00; A; A01; A01N; A01N43/00; A01N43/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |