Patent US2745874A successfully refreshed from Google Patents.
US2745874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insecticidal derivatives of diphenyl urea
Assignee: Novartis AG
•
Filing: 1954-06-16
•
Granted: 1956-05-15
•
Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 Schetty Guido
- 👤 Stammbach Walter
- 👤 Zinkernagel Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/30; D; D06; D06M; D06M16/00; D06M16/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A DIPHENYL UREA COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
A DIPHENYL UREA COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |