US Patent No: 6,149,721
Number of patents in Portfolio can not be more than 2000
Solvent-based pen inks
Stats
-
Nov 21, 2000
Issued date -
Feb 3, 1999
filing date -
09/244,538
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
Solvent-based pen inks are provided. The inks include an acid dye and a solvent system that includes an oxa acid solvent, the oxa acid solvent functioning as the primary solvent for the acid dye. Preferred inks are eradicable, and include an acid dye that decolorizes if contacted with a decolorizing compound.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 5,116,410 Washable dye-containing composition | 23 | 1990 | |
| 5,232,494 Color changing compositions | 38 | 1992 | |
| 5,352,282 Color changing compositions | 23 | 1993 | |
| 5,326,388 Color changing compositions | 32 | 1993 | |
| 5,486,228 Washable color changing compositions | 39 | 1994 | |
| 5,460,647 Color-changing marking composition system | 24 | 1995 | |
| 5,464,470 Color-changing marking composition system | 30 | 1995 | |
|
|
|||
| 4,213,717 Ball point pen, ink and its eradicator system | 38 | 1978 | |
| 4,227,930 Ball point pen, ink, and its eradicator system | 37 | 1978 | |
| 4,228,028 Ball point pen, ink, and its eradicator system | 29 | 1978 | |
|
|
|||
| 5,378,752 Ink eradicator system including film forming polymer | 17 | 1992 | |
| 5,649,999 Ink eradicator system | 17 | 1996 | |
|
|
|||
| 5,043,013 Washable ink compositions | 52 | 1989 | |
| 5,059,244 Fugitive colorant and washable ink compositions | 32 | 1990 | |
|
|
|||
| 4,681,471 Kit comprising multicolored fluid dispenser markers together with eradicating fluid dispenser, stamps and stamp pad | 35 | 1984 | |
|
|
|||
| 5,478,382 Color changing compositions for use on non-porous surfaces | 22 | 1994 | |
|
|
|||
| 4,252,845 Graphic arts ink and eradicator combination | 36 | 1978 | |
|
|
|||
| 5,006,171 Ink eradicator for inks containing triaryl methane dyestuffs | 30 | 1989 | |
|
|
|||
| 4,557,618 Ink and eraser of the ink | 77 | 1982 | |
|
|
|||
| 4,578,117 Erasable ink composition | 32 | 1984 | |
|
|
|||
| 5,700,316 Acoustic ink compositions | 40 | 1996 | |
|
|
|||
| 5,324,131 Emphasizing ink removing applicator and ink removal method | 18 | 1988 | |
| 5,427,278 Highlighting-ink remover applicator | 18 | 1994 | |
| 5,711,790 Marking composition | 5 | 1996 | |