US2769838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyglycol ether acid anilides
Assignee: CIBA PHARM PROD Inc
•
Filing: 1954-11-16
•
Granted: 1956-11-06
•
Expires: 1974-11-16
Abstract
No abstract record available.
Inventors
- 👤 Matter Max
- 👤 Rossi Alberto
- 👤 Sprecher Hans Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:34
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
POLY-1:2-GLYCOL ETHERS OF THE FORMULA:
References Cited (Backward Citations)
US2520551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |