Liquid ink
US6518329B1 · kind B1 · utility
2Cited by
21References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Mar 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-erasable liquid ink for a marking instrument including a colorant and a solvent and having a water content of about 0-15% by weight and a viscosity of about 15 to 4,500 cps. Also disclosed is a marking instrument filled with an ink of such a viscosity or lower in its reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.