Patents Assigned to Sorex Limited
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Patent number: 7314635Abstract: A briquette, which is easily pierceable and supportable, comprises compacted particulate material and has an outer region (1) and an inner region (2), said inner region (2) being provided with a well (3) having a diameter which decreases progressively in a non-linear relationship with increasing distance from the top of the well such that the sides of the well extend convexly into the well. The briquette, preferably, is a rodenticide block although it may, instead, be a block for sanitary, and/or domestic use. The briquette may be manufactured by compacting particulate material into the nip between a first rotating roll, having a surface provided with a suitable mould, and a second, counter-rotating roll.Type: GrantFiled: December 13, 2001Date of Patent: January 1, 2008Assignee: Sorex LimitedInventor: Martin Dooley
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Patent number: 6979453Abstract: A pesticidal composition comprises, as the sole pesticidally active component, a storage-stable aerated gel composition comprising 30 to 97% by weight of water, 0.2 to 5% by weight of a gelling agent selected from xanthan gum, sodium alginate and neutralized carboxyvinyl polymer and 2 to 5% by weight of fine particulate, hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g. The composition is in the form of fine particles of an aqueous gel containing the water and gelling agent, the surfaces of which fine particles are coated with a coating of the finely particulate hydrophobic silica. The composition is useful in a method of controlling pests, particularly insects and acarids.Type: GrantFiled: November 15, 2000Date of Patent: December 27, 2005Assignee: Sorex LimitedInventors: Roland Twydell, Lesley Le Quesne
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Patent number: 6861075Abstract: A storage-stable biocidal aerated gel composition comprises from 30 to 97% by weight of water, from 0.2 to 5% by weight of a gelling agent selected from xanthan gum, sodium alginate and neutralised carboxyvinyl polymer from 2 to 5% by weight of a fine particulate, hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g and from 0.004 to 20% by weight of a biocide which said composition is in the form of fine particles of an aqueous gel containing the water, gelling agent and the biocide, the surfaces of which fine particles are coated with a coating of the finely particulate hydrophobic silica. The biocidal aerated gel composition can be used to control pests using one or more appropriate biocides in the composition.Type: GrantFiled: April 6, 2001Date of Patent: March 1, 2005Assignee: Sorex LimitedInventor: Roland S. Twydell
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Patent number: 6716885Abstract: A storage-stable aerated gel composition comprising 30 to 97% by weight of water, 0.2 to 5% by weight of a gelling agent selected from xanthan gum, sodium alginate and neutralized carboxyvinyl polymer and 2 to 5% by weight of a fine particulate hydrophobic silicone-treated silica having a surface area of from 80 to 300 m2/g. The composition is in the form of fine particles of an aqueous gel containing the water and the gelling agent, the surface of which particles are coated with a coating of the finely divided particulate hydrophobic silica. The gel composition is prepared by mixing, under high shear conditions, the water and the fine particulate silica, and then adding to the resulting mixture, the gelling agent and mixing under high shear conditions.Type: GrantFiled: September 10, 2002Date of Patent: April 6, 2004Assignee: Sorex LimitedInventors: Roland Twydell, Lesley Le Quesne
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Patent number: 6689796Abstract: A rodenticidal composition comprises a carrier together with a rodenticidally effective amount of a compound having formula (I) wherein R1, R2, R3, R4, R5, R6, R7 and R8 are the same or different halogen selected from F, Cl and Br atoms. The preferred compound is bis(2,3,5,6-tetrafluoro-4-pyridyl)amine. The compounds of formula (I) are toxic to rodents, particularly rats, and yet have smell and taste acceptable to rodents.Type: GrantFiled: May 10, 2002Date of Patent: February 10, 2004Assignee: Sorex LimitedInventors: Roger Johnson, Malcolm Hadler
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Patent number: 6192825Abstract: A device for the detection of rodents includes a generally hollow container having an aperture to allow entry into the container and exit from the container by a rodent, and an indicator to indicate that a rodent has exited the container through the aperture. Preferably, the indicator comprises a flexible barrier located across the aperture. At least part of this flexible barrier is capable of being displaced from an interior position of the container to an exterior position of the container by the movement of a rodent through the aperture from the interior to the exterior of the container. Thus, the device is able to detect rodent infestation and is able to provide positive evidence of a rodent having been present inside the container.Type: GrantFiled: April 1, 1999Date of Patent: February 27, 2001Assignee: Sorex LimitedInventor: Roland Stephen Twydell