US3275677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-cyanomethylaminonitrile and alpha-carboxamidomethylaminonitrile compounds
Assignee: Wyeth Holdings LLC
•
Filing: 1963-08-20
•
Granted: 1966-09-27
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Expires: 1983-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Duff Shederic Allen
- 👤 Ruso Edward Rudolph
- 👤 Sidney A Frankel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:10
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D241/00; C07D241/02; C07D241/06; C07D241/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2752393A
Cited
US2762805A
Cited
US2886594A
Cited
US3026321A
Cited
US3121717A
Cited
US3166582A
Cited
US3166583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |