| Patents for C09D 13 - Pencil-leads; Crayon compositions; Chalk compositions (802) |
|---|
| 05/23/2001 | EP1100685A1 Marking system |
| 05/22/2001 | US6235273 Washable non-toxic body paint for applying color to human skin |
| 04/25/2001 | EP1093495A1 Erasable colored pencil lead |
| 04/25/2001 | EP1093494A1 Crayons containing ester waxes |
| 04/03/2001 | US6210471 Marking or coloring material comprises a wax, a fatty acid, a reflecting filler, and a oil disperasable pigment; crayons or colored pencils |
| 03/21/2001 | EP1084198A1 Effect pigments coated with reactive orientation auxiliary agents |
| 03/20/2001 | US6203910 Crayon |
| 03/20/2001 | US6203602 Mixture of chalk and concrete |
| 03/15/2001 | WO2000073394A8 Process for producing burned colored-pencil lead |
| 03/15/2001 | WO2000001533A8 Marking system |
| 03/01/2001 | DE19910870C1 Pigmenthaltige Gelmasse auf Ölbasis Pigmented oil-based gel material |
| 01/18/2001 | DE19932823A1 Farbmine oder Farbkreide Coloured lead or colored chalk |
| 01/17/2001 | EP1069166A1 Coloured lead or coloured chalk |
| 12/12/2000 | US6160037 Reactive extrusion of latent pigments |
| 12/07/2000 | WO2000073394A1 Process for producing burned colored-pencil lead |
| 10/24/2000 | US6136078 A color mixture comprising a wax, a fatty acid, a reflecting filler and a colorant selected from the group consisting of an oil soluble dye and an oil dispersable dye; crayons, colored pencils |
| 09/26/2000 | US6124377 Marking system |
| 09/21/2000 | WO2000055264A1 Method for increasing the tensile, breaking and flexural strength of coloured leads and coloured pencils containing the same |
| 09/21/2000 | DE19911748A1 Verfahren zur Erhöhung der Zug-, Bruch und Biegefestigkeit von Farbminen sowie solche Minen enthaltende Farbstifte A method for increasing the tensile, breaking and flexural strength of colored leads, as well as such mines containing crayons |
| 09/13/2000 | EP1035181A1 Pigmented oil-based gel composition |
| 09/13/2000 | CN1266077A Method for making flash powder glue pen |
| 08/23/2000 | CN1055714C Correction and marking materials |
| 08/22/2000 | US6106597 Wax compositions comprising fatty ester poly(oxyalkylenated) colorants |
| 07/06/2000 | WO2000039227A1 Baked colored pencil lead and process for producing the same |
| 07/06/2000 | DE19601585C2 Silikat-Kreiden Silicate chalks |
| 06/27/2000 | US6081689 Artist's marking material |
| 06/22/2000 | WO2000036032A1 Wax compositions comprising alkenyl succinic anhydride-capped poly(oxyalkylenated) colorants |
| 06/22/2000 | WO2000036031A1 Wax compositions comprising fatty ester poly(oxyalkylenated) colorants |
| 06/21/2000 | DE19923137A1 Lacquer pen, for removing e.g. scratches from automobile bodies, comprises stiff fiber tip and reservoir containing e.g. paint |
| 06/13/2000 | US6074465 Comprising a solution type fluorescent coloring agent, a gelling agent, an organic solvent, and a resin component; high coloring quality, good drawing quality, and good adhesion |
| 05/17/2000 | EP1000987A1 Non-calcined marrow of colored pencil |
| 05/10/2000 | CN2377251Y Prismatic writing-core for propelling pencil |
| 05/02/2000 | US6056810 Colored lead pencil |
| 04/26/2000 | EP0994775A1 Coloring media having improved brightness and color characteristics |
| 03/29/2000 | CN1050786C Wax-like substance and molding method by using same |
| 03/21/2000 | US6039797 Washable marking composition |
| 03/07/2000 | US6033464 Marking composition |
| 02/08/2000 | US6022402 Wax compositions comprising alkenyl succinic anhydride-capped poly (oxyalkylenated) colorants |
| 02/02/2000 | CN1243266A Untransparent projection screen and projection system using same |
| 01/25/2000 | CA2019040C Oil-based paint |
| 01/20/2000 | DE19758519A1 Silicate crayons, for use on hard substrates such as concrete or coarse plaster, contain added lime to increase hardness and reduce wear |
| 01/13/2000 | WO2000001533A1 Marking system |
| 01/06/2000 | WO2000000557A1 Erasable colored pencil lead |
| 01/04/2000 | US6011084 Erasable colored pencil lead |
| 12/23/1999 | WO1999065997A1 Crayons containing ester waxes |
| 12/23/1999 | CA2333117A1 Crayons containing ester waxes |
| 12/22/1999 | CN1239125A Technology for making erasable wax orayons by moulding |
| 12/02/1999 | WO1999061537A1 Non-calcined marrow of colored pencil |
| 11/11/1999 | WO1999057204A1 Effect pigments coated with reactive orientation auxiliary agents |
| 11/11/1999 | DE19820306A1 Reflective colouring agent, improves visibility of objects |
| 11/11/1999 | DE19820112A1 Mit reaktiven Orientierungshilfsmitteln beschichtete Effektpigmente Coated with reactive orientation aids effect pigments |
| 10/27/1999 | CN1232847A Medicated chalk and its production process |
| 08/11/1999 | EP0934834A2 Method for painting a mug with transfer paper and wax-based coloring material |
| 08/04/1999 | CN1224740A Chalk with protective film and its production process |
| 07/20/1999 | CA2172716C Correction and marking materials |
| 06/23/1999 | EP0924273A1 Colour pencil lead |
| 06/15/1999 | US5911814 Baked color pencil lead and process for producing the same |
| 06/10/1999 | DE19855325A1 Outer casing material for color, lead and cosmetic pencils |
| 03/03/1999 | EP0643748B1 Solid marking compositions |
| 01/28/1999 | DE19830929A1 Sintered coloured pencil lead with good intensity and bending strength |
| 01/21/1999 | WO1999002340A1 Coloring media having improved brightness and color characteristics |
| 12/16/1998 | CN1041214C Composition of moist dustless chalk |
| 10/29/1998 | DE19717828A1 Production of pigments for artists' paint etc. |
| 10/06/1998 | US5817897 Wax-like substance for use as a durable marking composition or in producing shaped articles for molding |
| 09/29/1998 | US5813216 Solid writing tool and method of erasing lines drawn therewith |
| 09/01/1998 | US5801215 Baked pencil lead and method for manufacturing the same |
| 08/19/1998 | EP0612341B1 Pencil and process for producing pencils |
| 08/18/1998 | CA2131527C Solid marking compositions |
| 06/24/1998 | EP0849339A1 Water-soluble coloured lead or coloured chalk and method for preparing the same |
| 06/18/1998 | WO1998026017A1 Marking composition |
| 06/18/1998 | CA2275204A1 Marking composition |
| 06/12/1998 | CA2219662A1 Marking composition |
| 05/19/1998 | US5753015 Soybean oil marking compositions and methods of making the same |
| 04/22/1998 | EP0836846A1 Pencil lead for colour pencils, cosmetic pencils and colour chalks and process of manufacturing same |
| 03/31/1998 | US5733482 Baked color pencil lead manufactured by impregnation with perhydropolysilazane and heat treatment |
| 03/24/1998 | US5730788 Erasers |
| 03/10/1998 | US5725642 Solid painting material |
| 02/10/1998 | US5716434 Non-erasable pencil lead |
| 01/07/1998 | CN1169450A Chalk, ifs making method and special moulding machine |
| 12/30/1997 | US5702513 Correction and marking materials |
| 12/10/1997 | EP0811042A1 Pressure-sensitive crayon adhesive |
| 11/26/1997 | CN1165842A 水粉笔液 Liquid water chalk |
| 11/26/1997 | CN1165841A Pollution-free prodn. method for color pencil and pencil-case |
| 11/19/1997 | CN1165167A Method for making medicated chalk |
| 07/24/1997 | DE19601585A1 Painting material used to form coloured layer on e.g. concrete |
| 07/16/1997 | EP0721485A4 Correction and marking materials |
| 07/08/1997 | US5645629 Calcined pencil leads and method of manufacturing the same |
| 06/25/1997 | EP0779914A2 Method for repairing paint damage |
| 04/15/1997 | US5620508 Mixture containing rosin, carbon black pigment and oil soluble dye; stability, adhesion, thermal transfer printing |
| 03/19/1997 | EP0763393A1 Wax-like substance and molding method by using wax-like substance |
| 03/06/1997 | DE19635011A1 Pencil lead directly giving non-erasable lines, marks, etc. |
| 02/18/1997 | US5604268 Friction activated acrylate adhesive containing crystalline monomer, waxy, soft monomer, tackifying monomer, acid monomer, macromeric unit, higher alkyl monomer, tackifier additive and filler; storage and handling stability |
| 02/12/1997 | CN1142520A Easily erasing dustless color chalk |
| 01/21/1997 | US5595700 Non-baked color pencil leads and method for preparing same |
| 01/21/1997 | US5595589 Baked color pencil lead and method of manufacturing the same |
| 01/07/1997 | US5591787 Synthetic polymer particles and fluorescent dye mixed in matrix; brightness |
| 12/24/1996 | US5587408 Containing emulsion of discontinuous polymeric phase and continuous aqueous phase, colorant, gel, tackifier, humectant, antioxidant, surfactant |
| 11/13/1996 | EP0742273A2 Solid painting material |
| 10/23/1996 | CN1134165A Correction and marking materials |
| 10/10/1996 | DE19611985A1 Prodn. of strong calcined coloured pencil leads giving light-fast marks |