S. C. Johnson Son, Inc.

Robert R Emmrich

Brian T Davis

Kenneth J Welch

Padma Prabodh Varanasi

Stanley J Flashinski

Michael J Aulozzi

Michael C Fryan

Debra A Strasser

Daniel T Ropiak

Phillip Kongshaug

Patrick J McCray

Esther M Helding

Joel E Adair

John W Mikkonen

Russell O Carlsen

Robert D Iverson

Harry E Bryant

Anthony Sosa

Jill C Geyer

Thomas A Lajiness

David S Eland

An insect repellent patch is disclosed of a size and weight compatible for wearing on the clothing or skin of a user. The patch has a gross area not in excess of 232 cmand bearing one or more insect repellents having a vapor pressure at 25&#xb0; C. of not less than about 1&#xd7;10mm Hg. The total amount of insect repellent is in an amount effective to provide practical mosquito personal area repellency. Kits of such patches, with instructions for use, and methods of providing practical personal area insect repellency are also disclosed.

Wearable insect repelling patch

Disclosed herein are burnable air treatment chemical dispensing substrates, such as mosquito coils, in which wax is incorporated. In one form the wax portion is a separate coating layer in which the air treatment chemical is also placed. This permits the underlying base to be dried without loss of air treatment chemical. Methods for forming such coils are also disclosed.

Wax treated burnable dispensing substrates

Volatile impregnated substrates, such as wicks and mats, that can be used in a dispensing device that uses a heat source or otherwise uses active means to promote the release of the volatile material from the substrate are disclosed. The preferred substrate has a structure including sand particles adhered together by a binder to form a network of pores and passages. The binder is selected from thermoset polymeric materials and mixtures thereof. A volatile material is disposed in the pores before the substrate is installed in the dispensing device. The impregnated substrate is positioned in the dispensing device on or near the heat source of the dispensing device. The heat source is activated thereby elevating the temperature of the substrate such that volatile material is released from the pores. In one embodiment, the sand particles comprise silica sand and the binder is a cured novolac resin.

Substrate for volatile delivery systems

A wick assembly is provided for use in a dispensing device that dispenses volatile material from a wick by heat. Two wick sections of differing material are provided in stacked fashion, with a coupler sleeve that can be used to facilitate attachment of the wick structure to a reservoir. One wick section preferably provides control over the rate of dispensing, where the other provides improved thermal resistance and resistance to clogging.

Wick assembly

Substrates are provided for use in a heating and/or blowing device that dispenses volatile material. The substrates are a porous medium (such as porous ceramic) having their interior pores coated by a polymeric material (such as a polysiloxane). The substrate is impregnated with a volatile such as pyrethrum. The substrate is less susceptible to clogging. Also disclosed are methods of making those substrates in which the polymeric material is wicked into the substrate with a volatile solvent.

Volatile releasing substrates and methods for preparing them

The present invention provides an insect control coil that disperses an initial burst or quick release of a high concentration of insect active ingredient into the environment to provide a fast acting initial dose together with a sensory cue indicative of the release of the active substance. In order to accomplish this, the insect control coil includes a spiral-shaped body composed of a burnable material and having an insect control active substance as an ingredient thereof, a coating on the spiral-shaped body which contains an auxiliary amount of an insect control active substance which provides an auxiliary burst of active substance when burnt, and at least one of either the body or the coating further including a sensory cue indicative of the release of the reactive substance from the coating. The coating may be formed on the tip end of the body, or alternately, may be formed intermittently along the length of the body of the coil.

Burst delivery insect control coil

An insect control article to control flying insects. The insect control article has a substrate that is impregnated with an active insect control ingredient that is available for passive evaporation. The active insect control ingredient is selected from the group consisting of transfluthrin, prallethrin, tefluthrin, esbiothrin, and combinations thereof. The method of the invention for controlling flying insects includes providing an insect control article having a substrate that is impregnated with an active insect control ingredient available for passive evaporation, wherein the active insect control ingredient is selected from the group consisting of transfluthrin, prallethrin, vaporthrin, teflurthrin, esbiothrin, DDVP, and combinations thereof. The insect control article is then placed in an environment with air movement in such a manner that the substrate of the insect control article is exposed to the air movement, and the active insect control ingredient impregnated within the substrate is allowed to evaporate passively into the air.

Article for insert control by passive evaporation of an active ingredient

An interconnectable fumigant element connectable with like elements to form a segmented fumigant. The fumigant element has a burnable, elongated body holding a volatilizable active. The body has a first connector at one end and a second connector at a location remote from the first connector, the shapes of the first and second connectors being such that a user can use them to connect two such bodies. A second body so connected to a first body is automatically ignited as the first body bums down to its first connector. Two or more such bodies can be connected to form a segmented fumigant. A method of controlling insects by using such fumigant elements is also disclosed, as well as a kit including such fumigant elements for forming burnable and segmented fumigants. The connected fumigants can be stacked in a vertical manner or disposed horizontally.

Interconnectable fumigant

An insect coil having an extended, burnable body. The body has multiple treated zones bearing a volatilizable insect control active ingredient at insect controlling levels separated by spacing zones bearing a level of insect control active ingredient lesser than that of the treated zones. When burned, the insect coil releases bursts spaced in time of the active ingredient in insect controlling quantities. Preferably the spacing zones are active ingredient free, and the first treated zone to be burned has an active ingredient level higher than the remaining treated zones. A method of controlling insects by use of the insect coil also is disclosed.

Growing community of inventors

Racine, WI, United States of America

Robert R Emmrich