Invention Grant
- Patent Title: Oil-based ink composition for writing instrument
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Application No.: US16608982Application Date: 2018-03-09
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Publication No.: US11649363B2Publication Date: 2023-05-16
- Inventor: Yumiko Haruhara
- 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: JP 2017100995 2017.05.22
- International Application: PCT/JP2018/009316 2018.03.09
- International Announcement: WO2018/216315A 2018.11.29
- Date entered country: 2019-10-28
- Main IPC: C09D11/16
- IPC: C09D11/16 ; B43K8/03 ; C09D1/00 ; C09D11/00 ; C09D13/00 ; C09D11/02
Abstract:
Provided is an oil-based ink composition for writing instruments which has good properties for writing on writing surfaces of various materials and which has improved friction resistance against friction from retracing of letters that have already been written and against stronger friction forces.
Information query
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