公开(公告)号：US20210188715A1

公开(公告)日：2021-06-24

申请号：US17036801

申请日：2020-09-29

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Sheng-Min YU ,  Sheng-Yi CHIU ,  Chien-Chung HSU

IPC: C04B35/553 ,  C02F1/28

Abstract: A method of removing fluoride ion from waste liquid is provided, which includes providing a calcium source and a plurality of ceramic particles to a waste liquid containing fluoride ion for forming a plurality of calcium fluoride layers wrapping the ceramic particles. The calcium fluoride layers are connected to form a calcium fluoride bulk. The ceramic particles are embedded in the calcium fluoride bulk. The ceramic particles and the calcium fluoride bulk have a weight ratio of 1:4 to 1:20.

公开(公告)号：US20210161006A1

公开(公告)日：2021-05-27

申请号：US16721509

申请日：2019-12-19

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Kai-Hsiang CHUANG ,  Chien-Chiang HSU ,  Chien-Chung HSU ,  Kuo-Chuang CHIU

IPC: H05K1/03 ,  C04B37/02

Abstract: A direct bonded copper ceramic substrate is provided, which includes a nitride ceramic substrate, a first passivation layer, and a first copper layer. The first passivation layer includes aluminum oxide or silicon oxide doped with another metal. The other metal is titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, or a combination thereof. The aluminum or silicon and the other metal have a weight ratio of 60:40 to 99.5:0.5. The first passivation layer is disposed between the top surface of the nitride ceramic substrate and the first copper layer.