Patent · US Active

Halogen and heavy metal-free humidity indicating composition and humidity indicator card containing the same

US8518344B2 · kind B2 · utility

0Cited by

4References

16Claims

0Family size

Assignee

SUD-CHEMIE IP GMBH & CO. KG · DE

Inventors

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

Key dates

Filing date	Dec 23, 2010
Grant date	Aug 27, 2013
Priority date	—
Expiry date	Jun 14, 2031

Classification

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

Abstract

The disclosed invention is a humidity indicating composition comprising Furthermore, the invention relates to a humidity indicator card comprising a sheet substrate and the humidity indicating composition from which the solvent has been allowed to evaporate, and to a process for preparing said humidity indicator card.

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