Combustible pesticidal products

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants

Reexamination Certificate

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Details

C424S409000, C424SDIG010, C514S531000, C514S919000

Reexamination Certificate

active

07344729

ABSTRACT:
A combustible pesticidal product is disclosed which comprises a structural element formed from a cardboard having a thickness of at least 0.75 mm, a density of 450-850 kgm3and consisting of 1 or more plies, the cardboard including: an alkali or alkaline earth metal nitrate or nitrite in an amount of from 0 to 1.83% w/w, or an alkali or alkaline earth carbonate or bicarbonate in an amount of from 0.02 to 7.0% w/w; one or more mineral silicates in an amount of from 0.01 to 8.0% w/w; a phosphate in an amount of from 0.01 to 0.40% w/w and selected from the group consisting of diammonium phosphate, monoammonium phosphate, triammonium phosphate and mixtures thereof; a boron compound in an amount of from 0.001 to 0.92% w/w (as boron) and selected from the group consisting of boric acid, sodium tetraborate hydrous, sodium borate, potassium borate, calcium borate, zinc perborate, boronatrocalcite and mixtures thereof; one or more pesticides; and optionally a perfume and/or a dye, which product on combustion emanates the pesticide into the atmosphere. Typically the combustible product will be a mosquito coil which has been impregnated with one or more insecticides effective against mosquitoes. On combustion of the coil, insecticide is emanated into the atmosphere for a period of at least 4 hours. However, the coils of the invention may be active against mosquitoes for 8 hours or more.

REFERENCES:
patent: 3257267 (1966-06-01), Hay
patent: 5096539 (1992-03-01), Allan
patent: 5447713 (1995-09-01), Elsner
patent: 2 705 530 (1994-12-01), None
patent: 2 139 498 (1984-11-01), None
patent: 54076827 (1979-06-01), None
patent: 6055507 (1994-03-01), None
patent: 97 42814 (1997-11-01), None
patent: 01 00105 (2001-01-01), None
patent: 01 00105 (2001-01-01), None
PCT International Search Report, dated Oct. 18, 2001, for PCT/GB01/03774.
GB Search Report, dated Feb. 21, 2001, for GB 00220622.7.
WPI Abstract, Access No. 1995-016067 for FR 2705530.

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