US3288848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-amino dibasic acid hydrazides
Assignee: Pharmacia and Upjohn Co
•
Filing: 1964-12-21
•
Granted: 1966-11-29
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Jack W Hinman
- 👤 Ronald B Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:54
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US3162680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |