Mosquito coil and process for producing mosquito coils

US5447713A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Thomas Elsner · Düsseldorf, DE
• Manfred Schutte · Großenhain, DE
• Heinrich Wolfers · Rheurdt, DE
• Wulf Wendeborn · Gronau, DE

Key dates

• Filing date: Mar 18, 1993
• Grant date: Sep 5, 1995
• Expiry date: Mar 18, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31989
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Mosquito coils are resistant to breakage, light, flat and ensure a good active substance yield if they consist of a wood-chip and/or fiber material of a density of only 0.4 to 0.7 kg/dm.sup.3 and preferably have a thickness of 1 to 4.5 mm, the active substance being applied to the spiral (1) as a layer (2).