US4439415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device intended for dispensing insecticide vapors
Assignee: Reckitt Benckiser LLC
•
Filing: 1981-03-13
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Granted: 1984-03-27
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Expires: 2001-03-13
Abstract
Abstract Device which is intended for dispensing insecticide vapors and which can be used in or on a heating apparatus, the said device consisting of several different juxtaposed solid compositions each containing a substance with an action against insects, which is absorbed in an absorptive bulk material, the said active substance being chosen, in at least one of the compositions, from the group comprising the pyrethrinoids and the isopyrethrinoids.
Inventors
- 👤 Claude Hennart
- 👤 Jacques Courdent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:14
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/18; A01N53/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A device for dispensing insecticidal vapors which comprises a cellulosic absorptive substrate having two different pyrethrinoids absorbed into separate sections thereof, said pyrethrinoids being selected from the group consisting of allethrin, bioallethrin, tetramethrin, d-phenothrin and d-allethrin and being present in weight ratios relative one to the other ranging from 1:1 to 3:1.
Claim 2
Independent Claim
52 words
A device for dispensing insecticidal vapors which comprises a cellulosic absorptive substrate having two different pyrethrinoids absorbed into separate sections thereof, said pyrethrinoids being selected from the group consisting of allethrin, bioallethrin, tetramethrin, d-phenothrin and d-allethrin and being present in weight ratios relative one to the other ranging from 1:1 to 3:1.
Claim 3
Dependent Claim
19 words
The system according to claim 1, wherein the absorptive substrate has a thickness of between 0.1 and 6 millimeters.
Claim 4
Dependent Claim
18 words
The system according to claim 1, wherein the different impregnated areas are separated by an area containing insecticide.
Claim 5
Dependent Claim
19 words
The system according to claim 3, wherein the area not containing insecticide is impregnated with a surface sealing substance.
Claim 6
Dependent Claim
26 words
The system according to claim 4, wherein said substance is selected from the group consisting of waxes, alkali metal silicates, natural resins and synthetic polymeric resins.
Claim 7
Dependent Claim
35 words
The system according to claim 5, wherein the polymerisable material utilized in said polymeric resin is a monomer selected from the group consisting of styrene, acrylic acid esters, maleic acid esters and cyanoacrylic acid esters.
References Cited (Backward Citations)
FR1197301A
Cited
FR1602397A
Cited
FR1596401A
Cited
US3911101A
Cited
US3723615A
Cited
US3835176A
Cited
US3966963A
Cited
US3943239A
Cited
US4296091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |