Patent · US Expired

Marking of articles

US3936556A · kind A · utility

3Cited by

1References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Carlhans Suling · Odenthal, DE
Hans Theidel
Hellmut Striegler · Leverkusen, DE
Wolfram VON Langenthal

Key dates

Filing date	Feb 13, 1974
Grant date	Feb 3, 1976
Priority date	—
Expiry date	Feb 13, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2779
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for identifying manufactured articles in which a marking agent such as a homo- or copolymer of polymerizable ethylenically unsatured monomers is applied to the articles. Said homo- or copolymer contains at least one group which can be split off to form a low molecular weight compound such as an amine or phenol, which can be converted into dyes, said dyes being used to identify the manufactured articles.

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