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US 6,551,560 B1Granted
Two-stage dispensing mat
AssigneeS. C. Johnson & Son, Inc.
InventorsStanley J. Flashinski, Daniel T. Ropiak, Donald W. Hildebrandt
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Abstract
Disclosed herein is two-stage mat for dispensing volatile materials. The mat is comprised of two materials varying either in thickness, thermal conductivity and/or porosity (and coated with like volatile material), or coated with volatile materials having different vaporization pressures. In either configuration, the mat provides for both an instant burst of volatile and then a sustained vaporization of volatile. Methods of using such mats are also disclosed.
Claims11
A mat for dispensing volatile vapors when heated, comprising:
- a first mat substrate region having a first volatile material with an active selected from the group consisting of insect control agents, fragrances, deodorizers, and combinations thereof;
- and
- a second mat substrate region, not part of the first mat substrate region, having a second volatile material different from the first volatile material with an active selected from the group consisting of insect control agents, fragrances, deodorizers, and combinations thereof;
- wherein the first mat substrate region is a central region and the second mat substrate region is an outward region around the central region, and the first volatile material of the first mat substrate region releases at a rate greater than does the second volatile material of the second mat substrate region in response to heating of the mat.
1 more element
Dependencies are inferred from the claim text.