Invention Grant
- Patent Title: Polishing sheet and polishing tool
- Patent Title (中): 抛光板和抛光工具
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Application No.: US14568477Application Date: 2014-12-12
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Publication No.: US09440331B2Publication Date: 2016-09-13
- Inventor: Kiyotaka Sawada , Jun Zhang
- Applicant: Kiyotaka Sawada , Jun Zhang
- Applicant Address: JP Tokyo
- Assignee: RICOH COMPANY, LTD.
- Current Assignee: RICOH COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2013-259152 20131216
- Main IPC: B24D11/00
- IPC: B24D11/00

Abstract:
A polishing sheet comprising a plurality of convex portions which protrudes from a sheet surface and includes an upper surface which is in parallel to the sheet surface is disclosed. A plurality of abrasive grains made by a granular porous body in which a number of primary particles are partially bonded to each other and include a void in between is arranged at least on the upper surface of the convex portion.
Public/Granted literature
- US20150165592A1 POLISHING SHEET AND POLISHING TOOL Public/Granted day:2015-06-18
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