US2418652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insecticidal compositions
Assignee: Shell Development Co
•
Filing: 1942-05-28
•
Granted: 1947-04-08
•
Expires: 1962-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1405856A
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US1940646A
Cited
US2206928A
Cited
US1934057A
Cited
GB393276A
Cited
US2134917A
Cited
US2151788A
Cited
US2139277A
Cited
US2202387A
Cited
US2362760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |