US Patent No: 5,464,470

Number of patents in Portfolio can not be more than 2000

Color-changing marking composition system

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Abstract

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A color-changing marking composition system, suitable for use in the form of crayons and pencils, comprising a first marking composition comprising wax, a dye, which is other than a Leuco dye and which is capable of changing color upon contact with a color change-inducing compound, and a solvent capable of solubilizing the dye; and a second marking composition comprising wax and a color change-inducing compound, which is capable of inducing a color change in a dye in a marking composition with which it is brought in contact.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CRAYOLA LLCEASTON, PA123

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allison, Keith Blandon, PA 2 40
Brachman, Armand Emmaus, PA 1 31

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SAKURA COLOR PRODUCTS CORPORATION (18)
4,193,906 Compositions for solid writing materials and writing implements 23 1978
4,212,676 Compositions for solid writing materials and writing implements 27 1979
4,256,494 Erasable ink composition for writing on an impervious surface 44 1979
4,604,139 Dual color ink composition 26 1982
4,460,727 Water base pigment ink composition for writing 23 1982
4,525,216 Ink composition 35 1982
4,490,177 Dual color ink composition 29 1983
4,525,215 Ink composition 9 1984
4,578,117 Erasable ink composition 32 1984
4,620,941 Thermochromic compositions 31 1984
4,954,174 Erasable ink compositions 32 1988
5,120,359 Erasable ink compositions 38 1989
4,942,185 Water base pigment ink compositions for use in marking pens 20 1989
5,009,536 Water base pigment ink compositions for use in marking pens 19 1990
5,004,763 Water base erasable ink compositions 43 1990
5,106,881 Water base pigment ink compositions for use in marking pens 20 1991
5,176,746 Oil ink composition 10 1991
5,203,913 Erasable aqueous ink composition 29 1991
 
CRAYOLA LLC (4)
5,262,535 Surfactant composition and method of making the same 21 1992
5,232,494 Color changing compositions 38 1992
5,352,282 Color changing compositions 23 1993
5,326,388 Color changing compositions 32 1993
 
NU-KOTE INTERNATIONAL, INC. (2)
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
 
A. B. DICK COMPANY (1)
5,017,226 Ink and method for the development of concealed images 15 1988
 
Adger Kogyo Co., Ltd. (1)
4,744,826 Ink composition 11 1986
 
Aktieselskabet For Kontor Kemi (1)
4,262,935 Donor material for carbonless copying and coating composition for the same 6 1978
 
All-Mark Corporation, Inc. (1)
4,681,471 Kit comprising multicolored fluid dispenser markers together with eradicating fluid dispenser, stamps and stamp pad 37 1984
 
BEROL CORPORATION (1)
4,988,123 Erasable system including marking surface and erasable ink composition 48 1988
 
BINGLO, INC. (1)
5,222,823 Device for marking tickets for game of chance with translucent, vibrant colored ink 46 1986
 
CANON KABUSHIKI KAISHA (1)
4,505,749 Method of forming color images 26 1983
 
CHARTPAK, INC. (1)
4,252,845 Graphic arts ink and eradicator combination 37 1978
 
CHROMONIX, LTD. (1)
4,725,316 Color compositions and method 16 1985
 
CONROS CORPORATION (1)
4,954,544 Modified adhesive composition which undergoes color changes upon application 50 1989
 
GOLD CHARM LIMITED (1)
2005/0185,915 Light guide plate with subwavelength grating and backlight module using the same 1 2004
 
HEWLETT-PACKARD COMPANY (1)
5,118,350 Dye-set for improved color quality for ink-jet printers 33 1991
 
Hubdean Limited (1)
4,428,994 Anti-graffiti facing of walls or similar surfaces 18 1981
 
IBM INFORMATION PRODUCTS CORPORATION, 55 RAILROAD AVENUE, GREENWICH, CT 06830 A CORP OF DE (1)
4,413,266 Method and apparatus for erasing ink jet printing 26 1981
 
J.B. STUDIOS, INC., 306 KENTUCKY HOME LIFE BUILDING, LOUISVILLE, 40202 (1)
4,889,559 Latent ink 10 1984
 
Lockley Services Pty. Ltd. (1)
4,322,466 Sheet printed with invisible inks 25 1978
 
MAGICRAYON, INC. (1)
5,279,859 Method for coloring fabric with crayon 11 1992
 
Milliken Research Corporation (1)
5,043,013 Washable ink compositions 54 1989
 
MODY, SANJAY S. (1)
5,196,237 Method for coloring fabric with crayon 13 1991
 
NIPPON PAINT CO., LTD. (1)
5,302,194 Heat sensitive color developing material 6 1991
 
OKITSUMO INCORPORATED (1)
5,082,386 Paper adhesive applicator with adhesive having pH indicator 27 1990
 
PELIKAN GMBH (1)
5,006,171 Ink eradicator for inks containing triaryl methane dyestuffs 30 1989
 
PELIKAN PRODUKTIONS AG (1)
4,246,033 Arrangement for applying written or drawn information onto image carriers for overhead projection 11 1977
 
Pentel Kabushiki Kaisha (1)
4,557,618 Ink and eraser of the ink 80 1982
 
RICOH COMPANY, LTD. (1)
5,024,699 Leuco dyes and recording materials using the same 12 1990
 
SHINSHU SEIKI KABUSHIKI KAISHA (1)
4,352,691 Liquid ink for printers 32 1980
 
The Gillette Company (1)
4,732,614 Novel correction compositions and process for using same 20 1985
 
The Mazer Corporation (1)
4,525,214 Crayon adapted for development of latent images 22 1983
 
Other [Check patent profile for assignment information] (8)
4,617,058 Process for producing blackboard crayon 8 1985
4,708,817 Creative art medium for forming artistic expressions having a latent luminescent image pattern 23 1986
4,741,774 Plastic colored crayon 11 1986
4,907,903 Representing utensil 15 1988
5,139,572 Reusable hidden indicia printed sheet 78 1990
5,215,956 Color changing print 30 1991
5,196,243 Printed matter 18 1992
5,324,348 Disposable orthodontic wire marker 5 1993

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SANFORD, L.P. (10)
6,905,539 Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex 12 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
7,442,725 Color changing correction fluid 1 2004
7,163,575 Water-based, resin-free and solvent-free eradicable ball-pen inks 5 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
7,488,380 Highlighting marking compositions, highlighting kits, and highlighted complexes 4 2006
8,110,615 Correction fluids 0 2006
7,452,146 Writing instruments with eradicable inks and eradicating fluids 3 2007
 
CRAYOLA LLC (8)
6,011,084 Erasable colored pencil lead 6 1998
6,124,377 Marking system 24 1998
6,262,143 Erasable colored pencil lead 1 1998
6,271,286 Erasable colored pencil lead 1 1999
6,815,471 Erasable colored pencil lead 0 2001
7,910,531 Composition and method for producing colored bubbles 0 2005
7,727,319 Water-based ink system 0 2006
7,815,723 Water-based ink system 1 2006
 
BEROL CORPORATION (5)
5,549,742 Assembly or set of different color inks and an assembly of writing instruments 11 1995
5,649,999 Ink eradicator system 17 1996
5,916,357 Eradicable inks 12 1997
6,149,721 Solvent-based pen inks 10 1999
6,221,432 Eradicable inks 11 1999
 
KIMBERLY-CLARK WORLDWIDE, INC. (2)
8,273,306 Color-changing materials and multiple component materials having a color-changing composition 1 2009
8,623,290 Color-changing materials and multiple component materials having a color-changing composition 0 2012
 
3M INNOVATIVE PROPERTIES COMPANY (1)
8,124,169 Antimicrobial coating system 0 2006
 
A.W. FABER-CASTELL UNTERNEHMENSVERWALTUNG GMBH & CO. (1)
6,056,810 Colored lead pencil 4 1998
 
L'OREAL (1)
7,939,053 Method of making up nails 0 2007
 
MARS, INCORPORATED (1)
7,597,752 Edible inks for ink-jet printing on edible substrates 1 2003
 
Other [Check patent profile for assignment information] (2)
6,004,057 Marking and eradicating instrument and method of use of same 13 1997
6,179,501 Marking and eradicating instrument and method of use of same 28 1999

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