US3624198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rodenticide bait
Assignee: AR Chem Corp
•
Filing: 1968-10-03
•
Granted: 1971-11-30
•
Expires: 1988-10-03
Abstract
Abstract A rodent bait suitable for use on crops comprising a unitary body of intimately mixed particles of metal phosphide such as zinc phosphide, citric acid and a hard wax component. The hard wax component forms a protective coating around the particles of metal phosphide and citric acid. The citric acid has been found to completely decompose the metal phosphide toxicant upon absorption of moisture by the unitary body. Thus, the rodent bait of the invention has the advantage of preventing decomposition of the metal phosphide toxicant until a preset time when it completely decomposes the metal phosphide leaving no toxic residues.
Inventors
- 👤 Howard L Arbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:55
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/26; A01N25/002; A01N25/004; A01N59/00; A01N59/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
A melt extruded slug according to claim 1 comprising about 1 percent by weight zinc phosphide particles, about 35 percent by weight paraffin wax, about 2 percent by weight ceresin wax and about 1 percent by weight citric acid particles.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |