US2592540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized tetraethylpyrophosphate insecticidal dust
Assignee: FMC Corp
•
Filing: 1949-01-12
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Granted: 1952-04-15
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Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 Carroll C Cassil
- 👤 Yaffe Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:29
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
AN INSECTICIDAL DUST COMPRISING AN INORGANIC DILUENT IN MAJOR AMOUNT AND AS THE ACTIVE INGREDIENT TETRAETHYLPYROPHOSPHATE IN PINE OIL IN MINOR AMOUNT.
Claim 2
Dependent Claim
22 words
AN INSECTICIDAL DUST COMPRISING AN INORGANIC DILUENT IN MAJOR AMOUNT AND AS THE ACTIVE INGREDIENT TETRAETHYLPYROPHOSPHATE IN PINE OIL IN MINOR AMOUNT.
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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |