Title:
WRITING INSTRUMENT REFILL AND METHOD FOR MARKING WRITING INSTRUMENT REFILL
Document Type and Number:
WIPO Patent Application WO/2023/132363
Kind Code:
A1
Abstract:
A writing instrument refill having: an ink-containing tube made of a synthetic resin and the interior of which is visible, and a marking formed on the surface of the ink-containing tube due to foaming or carbonizing, or both, of the synthetic resin.
Inventors:
ONODERA YUTAKA (JP)
NAKASHIMA ATSUSHI (JP)
NAKASHIMA ATSUSHI (JP)
Application Number:
PCT/JP2023/000175
Publication Date:
July 13, 2023
Filing Date:
January 06, 2023
Export Citation:
Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
B43K7/02
Foreign References:
| JP2008273096A | 2008-11-13 | |||
| JP2019038168A | 2019-03-14 | |||
| JP2006291196A | 2006-10-26 | |||
| JP2010125809A | 2010-06-10 | |||
| JPH0595781U | 1993-12-27 | |||
| JPS5872084U | 1983-05-16 | |||
| JP2007062110A | 2007-03-15 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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