Patent · US Active

Dispenser for the controlled release of volatile substances

US8567693B2 · kind B2 · utility

4Cited by

9References

25Claims

0Family size

Assignee

LTS Lohmann Therapie-Systeme AG · DE

Inventors

Michael Roreger · Neuwied, DE
Malgorzata Kloczko · Linz, DE
Michael Feldhege · Koblenz, DE

Key dates

Filing date	Oct 23, 2003
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Dec 12, 2026

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L9/046
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a dispenser for a volatile substance (4), which contains a reservoir (1) and two control elements. The first control element (6) exerts a control function that is dependent on the substance characteristics of the volatile substance (4) and the material characteristics of the constituents of said first control element (6). However, the second control element (7) exerts a control function that is independent of the substance characteristics of the volatile substance (4) and the material characteristics of the constituents of said first control element (6). The first control element (6) is located between the reservoir (1) and the second control element (7) and is permeable to at least one volatile substance (4). The second control element (7) consists of a material that is impermeable to the volatile substance and contains defined material cavities (8). Perfumes, crop protection agents, pheromones and repellents, which can be released in a controlled manner, constitute the volatile substances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.