| Patents for C09D 13 - Pencil-leads; Crayon compositions; Chalk compositions (802) |
|---|
| 08/29/1996 | WO1996026249A1 Pressure-sensitive crayon adhesive |
| 08/29/1996 | CA2211195A1 Pressure-sensitive crayon adhesive |
| 08/11/1996 | CA2161590A1 Color-changing marking composition system |
| 08/11/1996 | CA2161588A1 Color-changing marking composition system |
| 07/17/1996 | EP0721485A1 Correction and marking materials |
| 07/17/1996 | CN1126742A Watercolour wax crayon |
| 07/09/1996 | US5534206 Method for preparing baked pencil leads using concentric straightening plates |
| 07/02/1996 | US5531947 Process and installation for the manufacture of pencils |
| 06/25/1996 | US5529615 Marking material and method for suspending pigment particles |
| 06/18/1996 | US5527385 Containing electron donating chromogenic compound, electron accepting compound, hydrazide compound desensitizer, transition temperature modifier |
| 05/29/1996 | EP0613414B1 Process and plant for producing pencils |
| 05/22/1996 | EP0712914A2 Calcined pencil leads and method of manufacturing the same |
| 05/15/1996 | CA2161589A1 Phosphorescent and fluorescent marking composition |
| 04/11/1996 | WO1996007706A3 Method for repairing paint damage |
| 03/20/1996 | CN1118723A Wax-like substance and molding method by using wax-like... |
| 03/14/1996 | WO1996007706A2 Method for repairing paint damage |
| 03/13/1996 | EP0643748A4 Solid marking compositions. |
| 03/12/1996 | US5498280 Crayons, high and low molecular weight polyethylene glycols |
| 02/27/1996 | US5494508 Method for improving erasability of erasable marking compositions |
| 02/21/1996 | EP0697447A1 Baked color pencil lead and method for manufacturing the same |
| 02/14/1996 | EP0696626A1 Baked pencil lead and method for manufacturing the same |
| 01/03/1996 | EP0487638B1 Solid correction compositions |
| 12/21/1995 | WO1995034611A1 Fluorescent marker |
| 12/13/1995 | EP0686677A2 Blendable writing instrument |
| 11/07/1995 | US5464470 Color-changing marking composition system |
| 10/24/1995 | US5460647 Color-changing marking composition system |
| 09/26/1995 | US5453120 Erasable marking material and a method for the manufacture thereof |
| 09/20/1995 | EP0672734A1 An erasable marking composition |
| 09/19/1995 | CA1337085C Washable solid marking composition |
| 09/13/1995 | EP0440724B1 Washable solid marking composition |
| 09/12/1995 | US5449399 Crayons, microcapsules |
| 09/05/1995 | US5447560 Method for improving erasability or erasable marking compositions |
| 09/04/1995 | CA2143359A1 Method for improving erasability of erasable marking compositions |
| 07/04/1995 | US5430075 Flaky graphite filler oriented in concentric tube; high strength and density |
| 06/22/1995 | CA2138752A1 Erasable marking material and a method for the manufacture thereof |
| 06/14/1995 | EP0657512A2 Silicone containing artists' media |
| 05/23/1995 | US5417746 Washable crayon composition |
| 04/18/1995 | US5407472 Mixture of barium sulfate and barium dissolving inhibitor of alkali metal, beryllium, magnesium, calcium, strontium, aluminum, or zinc sulfates or double sulfate salt |
| 04/06/1995 | WO1995009205A1 Correction and marking materials |
| 03/30/1995 | DE4431897A1 Method of removing paint damage |
| 03/29/1995 | CN1100740A Dustless chalk with medicine and the mfg. method |
| 03/22/1995 | EP0643748A1 Solid marking compositions |
| 02/16/1995 | WO1995004785A1 Improved water soluble crayon composition and method |
| 02/01/1995 | EP0636668A1 Solid drawing composition |
| 01/24/1995 | US5383954 Crayons |
| 01/10/1995 | US5380357 Ethoxylated alcohol |
| 12/21/1994 | CN1027075C Drawing liquid |
| 10/04/1994 | US5352279 Powdered calcium carbonate and rice starch |
| 09/13/1994 | US5346540 Colored pencils |
| 09/07/1994 | EP0613634A2 Process for producing sticks, especially cosmetic sticks |
| 09/07/1994 | EP0613414A1 Process and plant for producing pencils. |
| 08/31/1994 | EP0612341A1 Pencil and process for producing pencils |
| 08/23/1994 | US5340386 Silicone containing artists' media |
| 08/23/1994 | US5340226 Process for the production of a pencil stick, a stick produced by the process and a pencil having such a stick |
| 08/09/1994 | US5336307 Casing surrounding solid material containing dyes, water soluble metal soaps, saccharides, polyols and water |
| 08/09/1994 | US5336306 Water soluble coloring compositions containing sparkle components |
| 06/28/1994 | US5324348 Elongated shaft with one end coated with a mixture of waxes, fatty acids and colorants; can be transferred by pressure contact |
| 06/07/1994 | US5318622 A extruded articles is made of mixing materials comprising a binder, a coated pigments and filler with a fluorinated aromatic compound; nonwettable, bending strength, smooth writing |
| 05/18/1994 | EP0597328A2 Solid marking lead |
| 04/05/1994 | US5300538 Mixing pigment into an oil, heating a wax with a block copolymer until melted, homogenizing both; erasasble |
| 03/31/1994 | WO1994006875A1 Pencil, pencil lead and process for producing pencils |
| 03/31/1994 | WO1994006615A1 Process and plant for producing pencils |
| 03/31/1994 | DE4332582A1 Calcined pencil lead with improved strength - has graphite filler oriented in concentric tubular form in outer and inner radial layer(s), and in random or radial form elsewhere |
| 03/17/1994 | DE4230793A1 Verfahren und Anlage zur Herstellung von Schreibstiften Method and apparatus for manufacture of pencils |
| 03/17/1994 | DE4230792A1 Schreibstift, Schreibmine und Verfahren zur Herstellung von Schreibstiften Pen, writing cartridge and method for the manufacture of pencils |
| 03/17/1994 | DE4229555A1 Non-toxic dye bodies - for coloured pencil leads for drawing or cosmetics, and their prepn. |
| 01/18/1994 | US5279859 Blending coloring agent, stearic acid and triglycerides; heating; adding candelilla wax and molding |
| 01/05/1994 | DE4220466A1 Dry marking mixt. for sports fields - consisting of chalk with specified particle size and water-soluble binder |
| 12/09/1993 | WO1993024580A1 Solid marking compositions |
| 12/08/1993 | EP0573000A2 Non-baked color pencil leads and method for preparing same |
| 11/24/1993 | EP0570810A2 Marker pen |
| 11/24/1993 | CN1078686A Non-toxic and nondusty chalk and its process |
| 11/16/1993 | US5261952 Solid marking composition containing glitter |
| 10/20/1993 | CN1077472A Composition of moist dustless chalk |
| 10/01/1993 | CA2093091A1 Solid marking composition containing glitter |
| 09/28/1993 | US5248332 Pastels containing pearl pigments and method for producing the same |
| 08/18/1993 | EP0555673A1 Coloured lead |
| 08/17/1993 | US5236494 Aliphatic carboxylic acid salt gelling agent, coloring agent, hydrophobic silica, water, water soluble resin |
| 08/11/1993 | EP0523177A4 Phosphorescent marking material |
| 04/21/1993 | CN1071122A Method for produciton of medical health-care chalk |
| 04/13/1993 | CA1316285C Fragrance releasing crayons |
| 03/23/1993 | US5196237 Permanent coloring; mixture of Carnauba wax, triglycerides, stearic acid and a coloring agent |
| 03/03/1993 | CN1069503A Smooth chalk and producing method thereof |
| 03/03/1993 | CN1069450A Sanitary chalk and fabricating technology |
| 02/09/1993 | US5185038 Pastels containing fluorescent pigments and method for producing the same |
| 01/20/1993 | EP0523177A1 Phosphorescent marking material |
| 01/20/1993 | CN1068069A Destless chalk capable of wet erasing and wet writing, production thereof |
| 01/13/1993 | CN1067910A Water-soluble non-dust chalk |
| 12/30/1992 | CN1067439A Method to make water-soluble colour wax crayon |
| 11/19/1992 | EP0513498A1 Solid painting material |
| 11/05/1992 | DE4214396A1 Ungebrannte farbstiftminen und verfahren zu ihrer herstellung Unfired crayon mines and process for their production |
| 06/09/1992 | US5120358 Golf practice aid |
| 06/03/1992 | CN1061563A Automatic decolouring drawing pen |
| 06/02/1992 | US5118345 Composition for the preparation of pencil lead |
| 05/19/1992 | CA1300816C Method for the production of pencil leads and pencil leads produced by the method |
| 04/29/1992 | CN1060666A Lisi paint liquid and tool |
| 02/01/1992 | CA2048183A1 High opacity solid marking composition |
| 01/28/1992 | US5084493 Water soluble block polymers and coloring agent, forming a block polymer by reaction of alkoxylated blocks, mixing with a color |
| 01/28/1992 | US5084098 Alkoxylation product and coloring agent |
| 12/24/1991 | US5075054 Clay, graphite mixture |