Solvent-based non-fluorescent ink for writing instruments based upon pigment dispersions in non-aqueous solvents
US6503965B1 · kind B1 · utility
8Cited by
24References
38Claims
0Family size
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Key dates
| Filing date | Aug 24, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Aug 24, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/17
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-aqueous non-fluorescent ink composition suitable for use in writing instruments is described comprising a non-fluorescent pigment dispersion, a stabilizer and a high boiling point organic solvent. The ink composition may also include resins, plasticizers, antiskinning agents and lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.