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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Kitazawa; Katsunori
Address:
Gunma, JP
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
5595700 Non-baked color pencil leads and method for preparing same January 21, 1997
Non-baked color pencil leads are obtained by forming a blend composition from a filler, a coloring agent, a binder without any wax, and a water/oil repellant substance, kneading the mixture with a solvent and/or plasticizer, extruding the kneaded material, drying the extruded articles










 
 
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