Patent · US Expired

Non-aqueous ball point pen ink

US5314531A · kind A · utility

12Cited by

8References

17Claims

0Family size

Assignee

Huels Aktiengesellschaft · DE

Inventors

Bernhard Huber
Werner Freitag · Dorsten, DE

Key dates

Filing date	Feb 11, 1993
Grant date	May 24, 1994
Priority date	—
Expiry date	Feb 11, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/18
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Non-aqueous ball point pen inks, which contain dyes, resins, solvents and additives which demonstrate improved rheological behavior under the most varied climatic conditions. Leaking and spotting are reliably avoided, and ink production is simplified. Alcohol-soluble cellulose derivatives are used as additives.

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