发明授权
- 专利标题： Ball point pen filled with erasable ink
- 专利标题（中）： 圆珠笔填充有可擦墨水
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申请号： US004802申请日： 1998-01-09
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公开(公告)号： US5977211A公开(公告)日： 1999-11-02
- 发明人: Takao Koyama
- 申请人： Takao Koyama
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Pencil Kabushiki Kaisha
- 当前专利权人： Mitsubishi Pencil Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX9-003259 19970110
- 主分类号： B43K7/00
- IPC分类号： B43K7/00 ; C09D11/18 ; C09D11/00 ; C09D11/16
摘要：
A ball point pen filled with an erasable ink which comprises a resin or rubber having a filming temperature of 0.degree. C. or lower or a glass transition temperature of 0.degree. C. or lower, pigment particles and water. The erasability and the writing feeling are improved by further blending the ink with a gelatinizer and a lubricant.
公开/授权文献
- US5391837A Covered conduit box having a cover which captures screws 公开/授权日：1995-02-21