Invention Grant
- Patent Title: Aqueous ink composition for writing instruments
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Application No.: US16325903Application Date: 2017-06-14
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Publication No.: US10851252B2Publication Date: 2020-12-01
- Inventor: Kana Miyoshi , Kousuke Ogura , Akiko Hirayama
- Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Pencil Company, Limited
- Current Assignee: Mitsubishi Pencil Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2016-166619 20160829
- International Application: PCT/JP2017/022003 WO 20170614
- International Announcement: WO2018/042818 WO 20180308
- Main IPC: C09D11/17
- IPC: C09D11/17 ; B43K7/00 ; B43K8/02 ; C09D11/18
Abstract:
Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.
Public/Granted literature
- US20190211220A1 AQUEOUS INK COMPOSITION FOR WRITING INSTRUMENTS Public/Granted day:2019-07-11
Information query
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