Patent · US Expired

Transdermal therapeutic system identified without printing inks

US6080421A · kind A · utility

7Cited by

4References

2Claims

0Family size

Assignee

LTS Lohmann Therapie-Systeme AG · DE

Inventors

Peter Steinborn · Neuwied, DE
Michael Horstmann · Neuwied, DE

Key dates

Filing date	Apr 15, 1998
Grant date	Jun 27, 2000
Priority date	—
Expiry date	Apr 15, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K9/7023
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention refers to a transdermal therapeutic system for the delivery of active agents to the human body. The backing layer consists of common pharmaceutical plastic layer laminates which require labeling, e.g. by printing. The problem to solve lies in toxicological, technological and drug law disadvantages of pigment- or varnish-printing. According to the invention, the coding does not consist of an ink- or pigment layer but in an effect on surface properties of the backing layer corresponding to the coding.

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