Patent · US Active

Sensory pigments used on food, packaging, paper and pharmaceutical and electronic products

US8257980B2 · kind B2 · utility

2Cited by

5References

32Claims

0Family size

Inventor

Thomas Schalkhammer · Bischofshofen, AT

Key dates

Filing date	Aug 28, 2008
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Feb 17, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/78
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to sensory pigments for use in foods, packagings, pharmaceutical products, paper and electronic products. Said pigments are characterized by the fact that a chemically reactive polymer layer that is 5 to 500 nm thick is applied to metallic particles, metal particles or particles containing at least one metal-oxygen compound, said particles being preferably platelet or fiber-shaped, and a layer of chromophore particles that are between 1 and 100 nm in size is applied to the polymer layer, said particles having a color that is visible to the human eye and that changes after contact with an analyte.

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