US2862020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of a-amino-p-hydroxy
Assignee: —
•
Filing: —
•
Granted: 1958-11-25
•
Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:44
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/49; C07C205/57; C07C205/59; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A PROCESS FOR PRODUCING A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR PRODUCING A COMPOUND REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA
Claim 4
Dependent Claim
6 words
A COMPOUND REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2542812A
Cited
US2489891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |