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US 2020/0369869 A1Published application
Eraser
AssigneeSakura Color Products Corporation
InventorsShinji TSUJIO, Hiroyoshi YAMAMOTO, Nobuaki KOBAYASHI, Takayuki KITAGUCHI
Life of this patent
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Abstract
An eraser includes: a base material including a plasticizer and at least one of a resin component or an elastomer component; and a porous foam made of a resin and impregnated with the resin base material, and the plasticizer has an SP value of 8.3 or more and 10 or less.
Claims8
An eraser comprising:
- a base material including a plasticizer and at least one of a resin component or an elastomer component;
- and
- a porous foam made of a resin and impregnated with the base material, wherein
- the plasticizer has an SP value of 8.3 or more and 10 or less.
1 more element
Dependencies are inferred from the claim text.