US Patent No: 6,149,721

Number of patents in Portfolio can not be more than 2000

Solvent-based pen inks

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Importance

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Abstract

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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.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BEROL CORPORATIONFREEPORT, IL125

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hopson, Russell E Jamaica Plain, MA 3 36
Wang, Yichun Canton, MA 16 87

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 5,324,131 Emphasizing ink removing applicator and ink removal method 21 1988
* 5,427,278 Highlighting-ink remover applicator 19 1994
* 5,711,790 Marking composition 5 1996
 
Pentel Kabushiki Kaisha (1)
* 4,557,618 Ink and eraser of the ink 84 1982
 
All-Mark Corporation, Inc. (1)
* 4,681,471 Kit comprising multicolored fluid dispenser markers together with eradicating fluid dispenser, stamps and stamp pad 38 1984
 
Milliken Research Corporation (2)
* 5,043,013 Washable ink compositions 56 1989
* 5,059,244 Fugitive colorant and washable ink compositions 37 1990
 
XEROX CORPORATION (1)
* 5,700,316 Acoustic ink compositions 42 1996
 
BEROL CORPORATION (2)
* 5,378,752 Ink eradicator system including film forming polymer 17 1992
* 5,649,999 Ink eradicator system 18 1996
 
PELIKAN GMBH (1)
* 5,006,171 Ink eradicator for inks containing triaryl methane dyestuffs 30 1989
 
CRAYOLA LLC (7)
* 5,116,410 Washable dye-containing composition 26 1990
* 5,232,494 Color changing compositions 41 1992
* 5,352,282 Color changing compositions 23 1993
* 5,326,388 Color changing compositions 34 1993
* 5,486,228 Washable color changing compositions 43 1994
* 5,460,647 Color-changing marking composition system 27 1995
* 5,464,470 Color-changing marking composition system 37 1995
 
SAKURA COLOR PRODUCTS CORPORATION (1)
* 4,578,117 Erasable ink composition 32 1984
 
BINNEY & SMITH INC. (1)
* 5,478,382 Color changing compositions for use on non-porous surfaces 27 1994
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
IYA TECHNOLOGY LABORATORIES, LLC (1)
* 2008/0248,950 Ink and Developer System 1 2007
 
SANFORD, L.P. (19)
6,905,539 Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex 13 2003
* 2005/0011,404 ERADICABLE GEL INK, METHODS OF ERADICATION OF THE SAME, ERADICABLE INK KIT, AND ERADICATED INK COMPLEX 4 2003
7,083,665 Highlightable marking composition, method of highlighting the same, highlightable marking composition kit, and highlighted marking composition complex 2 2003
7,229,487 Writing instruments with eradicable inks and eradicating fluids 3 2004
* 2005/0150,423 Writing instruments with eradicable inks and eradicating fluids 0 2004
7,442,725 Color changing correction fluid 2 2004
* 2005/0075,419 Color changing correction fluid 1 2004
7,163,575 Water-based, resin-free and solvent-free eradicable ball-pen inks 7 2004
7,427,318 Highlightable and highlighted mixtures, marking instruments, and methods of using the same 0 2004
7,704,308 Method of highlighting with a reversible highlighting mixture, highlighting kit, and highlighted complex 0 2004
* 2005/0158,471 Method of highlighting with a reversible highlighting mixture, highlighting kit, and highlighted complex 2 2004
* 2005/0192,379 Eradicable composition and kit 4 2005
7,488,380 Highlighting marking compositions, highlighting kits, and highlighted complexes 5 2006
* 2007/0017,413 Highlighting marking compositions, highlighting kits, and highlighted complexes 4 2006
8,110,615 Correction fluids 0 2006
* 2007/0142,502 Correction fluids 3 2006
7,452,146 Writing instruments with eradicable inks and eradicating fluids 4 2007
* 2007/0231,494 Writing Instruments With Eradicable Inks And Eradicating Fluids 0 2007
9,109,126 Ink compositions comprising colorant particles containing polymeric particles 0 2013
* Cited By Examiner