US2518476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chx cm
Assignee: —
•
Filing: —
•
Granted: 1950-08-15
•
Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:15
CPC Classifications
C; C07; C07D; C07D421/00; C07D421/14; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; C07D417/00; C07D417/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A DYESTUFF OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2385815A
Cited
GB549202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |