Fluorescent inks for writing instruments using fluorescent dyes and white pigments
US6517619B1 · kind B1 · utility
10Cited by
27References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Feb 11, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/17
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-aqueous fluorescent ink composition suitable for use in writing instruments is described comprising a soluble fluorescent colorant, a solvent, and an opacifying agent. The ink composition may also include resins, stabilizers, surfactants, lubricants and other inert additives. The fluorescent ink composition exhibits a brilliant appearance in masscolor and when written on paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.