US3689550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-hydroxyphenyl-n{40 -phenylureas
Assignee: Novartis AG
•
Filing: 1969-03-11
•
Granted: 1972-09-05
•
Expires: 1989-03-11
Abstract
Abstract N-hydroxyphenyl-N''-phenylureas useful as active ingredients in preparations for combatting harmful micro-organisms, especially bacteria.
Inventors
- 👤 Max Schellenbaum
- 👤 Max Duennenberger
- 👤 Fulvio Casagrande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:04
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/32; C07C275/34; A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/30; A61; A61L; A61L12/00; A61L12/08; A61L12/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
The compound of the formula
Claim 2
Dependent Claim
5 words
The compound of the formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |