Joining member and ballpoint pen employing the same
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United States of America Patent
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May 14, 2013
Grant Date -
May 27, 2010
app pub date -
May 23, 2007
filing date -
May 23, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides a joining member for connecting an ink accommodating member and a ballpoint pen tip provided in a ballpoint pen, the joining member comprising, as a constituent material, a resin comprising a copolymer of polyethylene terephthalate and polyethylene naphthalate. By this means, it is possible to provide a joining member for a ballpoint pen having, in particular, both sufficiently excellent transparency and gas barrier properties.
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