Patent US3972993A successfully refreshed from Google Patents.
US3972993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insecticidal device
Assignee: Kureha Corp
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Filing: 1974-11-07
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Granted: 1976-08-03
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Expires: 1994-11-07
Abstract
Abstract An insecticidal device includes a core of an insect-attracting substance. The core is substantially covered with at least one perforated cover sheet covering at least part of the surface of the core, the cover sheet being coated on its exposed outer surface with a insecticidal agent. The perforations in the cover sheet have dimensions such that an insect trying to reach the insect-attracting substance will necessarily contact the insecticidal agent on the exposed outer surface of the cover sheet.
Inventors
- 👤 Hidetoshi Kobayashi
- 👤 Yoshiaki Niitani
- 👤 Hilomithu Abiru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:23
CPC Classifications
A; A01; A01M; A01M1/00; A01M1/20; A01M1/2005; A01M1/2016; A01M1/02; A01N; A01N25/00; A01N25/002; A01N25/006; A01M2200/00; A01M2200/01; A01M2200/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
In an insecticide and insect attractant carrier structure positioning each independently and thereby stabilizing the residual effectiveness of insecticides adversely affected by the presence of insect attractants, the improvement comprising a base sheet affixed to at least one perforated sheet, having a number of perforations, and having about 25-70 percent perforated area, each perforation having sufficient width to accomodate insects attracted to effective insect attractant adhered, impregnated, or coated, without insecticide, to said base sheet, with effective contact insecticide adhered, impregnated, or coated, without insect attractant, to said perforated sheet, said insecticide, thereby independently positioned from said insect attractant, being stabilized against and free from decomposition, instability, loss of residual effectiveness and other adverse effects attributable to contact with insect attractant.
Claim 2
Dependent Claim
121 words
In an insecticide and insect attractant carrier structure positioning each independently and thereby stabilizing the residual effectiveness of insecticides adversely affected by the presence of insect attractants, the improvement comprising a base sheet affixed to at least one perforated sheet, having a number of perforations, and having about 25-70 percent perforated area, each perforation having sufficient width to accomodate insects attracted to effective insect attractant adhered, impregnated, or coated, without insecticide, to said base sheet, with effective contact insecticide adhered, impregnated, or coated, without insect attractant, to said perforated sheet, said insecticide, thereby independently positioned from said insect attractant, being stabilized against and free from decomposition, instability, loss of residual effectiveness and other adverse effects attributable to contact with insect attractant.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |