Patent · US Active

Halogen and heavy metal-free composition for a humidity indicating device and humidity indicating device containing the same

US8585983B2 · kind B2 · utility

0Cited by

3References

22Claims

0Family size

Assignee

SUD-CHEMIE IP GMBH & CO. KG · DE

Inventors

Johanna Knyrim · Munich, DE
Stefan Dick · Weichering, DE

Key dates

Filing date	Jun 22, 2011
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Apr 5, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01N31/222
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The disclosed invention is a composition for a humidity indicating device comprising Furthermore, the invention relates to a humidity indicator device comprising a sheet substrate and the composition for a humidity indicating device containing no heavy metals or halogen compounds, and to a process for preparing said humidity indicator device.

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