US2620352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-aminobenzoates of methyldiethanolamine
Assignee: Individual
•
Filing: 1951-11-08
•
Granted: 1952-12-02
•
Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Beatty Isaac Croom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOUND CONFORMING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
7 words
A COMPOUND CONFORMING TO THE GENERAL FORMULA
References Cited (Backward Citations)
US828070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |