Polyurethane based inks for writing instruments
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 28, 2004
Grant Date -
Mar 20, 2003
app pub date -
Jun 8, 2001
filing date -
Jun 8, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A non-erasable ink composition suitable for use in writing instruments is described comprising an isocyanate five thermoplastic polyurethane resin, a colorant and an organic solvent. The ink composition may also include a second resin, plasticizers, antioxidants, corrosion inhibitors, lubricants, chemical dispersants, and surfactants. The inks of the present invention exhibit a smooth writing performance and non-seepage.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully