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公开(公告)号：US20220073417A1
公开(公告)日：2022-03-10
申请号：US17309854
申请日：2019-12-20
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Toshihiro Kasai , Kenton D. Budd , Jean A. Tangeman , Billy J. Frederick, Jr.
Abstract: To provide transparent solid spheres with high refractive index and large particle size. The transparent solid spheres of one aspect of the present disclosure include barium oxide, zirconium dioxide, and titanium dioxide on a theoretical oxide basis, and has a refractive index of at least 2.0 and a particle size of 600 micrometers or greater.
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