公开(公告)号：US20200308429A1

公开(公告)日：2020-10-01

申请号：US16830403

申请日：2020-03-26

Applicant: TDK CORPORATION

Inventor： Takashi FUKUI ,  Osamu HIROSE ,  Masanori ABE ,  Kazunari KIMURA ,  Hisashi KOBUKE

IPC: C09D11/17 ,  H03H1/00

Abstract: Provided is a more versatile black marker composition which achieves excellent adhesion between a mark and an electronic component element body and excellent contrast of a mark regardless of the composition of the electronic component element body, the black marker composition containing borosilicate glass and a black oxide, in which a crystallization temperature of the borosilicate glass is less than 910° C., and an amount of Zn in terms of ZnO is 0.05% by mass or less based on 100% by mass of an inorganic solid content in terms of an oxide contained in the black marker composition.

公开(公告)号：US20210300825A1

公开(公告)日：2021-09-30

申请号：US17212384

申请日：2021-03-25

Applicant: TDK CORPORATION

Inventor： Takashi FUKUI ,  Masanori ABE ,  Kazunari KIMURA ,  Kazusa OHSUGI ,  Fuga SATO

IPC: C04B35/20 ,  H01B3/12

Abstract: Provided is a dielectric ceramic composition comprising a main component of forsterite and calcium strontium titanate. A content ratio of forsterite in the main component is from 84.0 to 92.5 parts by mole, and a content ratio of calcium strontium titanate is from 7.5 to 16.0 parts by mole. (Sr+Ca)/Ti in the calcium strontium titanate is from 1.03 to 1.20 in terms of a molar ratio. With respect to a total of 100 parts by mass of the main component and a subcomponent except for Li-containing glass, from 2 to 10 parts by mass of Li-containing glass is added. The Li-containing glass includes Al2O3 in an amount of from 1% by mass to 10% by mass.

公开(公告)号：US20190092692A1

公开(公告)日：2019-03-28

申请号：US16136767

申请日：2018-09-20

Applicant: TDK CORPORATION

Inventor： Takashi FUKUI ,  Hisashi KOBUKE ,  Atsushi ISHIMOTO ,  Masanori ABE

IPC: C04B35/20 ,  H01G4/12

Abstract: A dielectric ceramic composition includes: Mg2SiO4 as main component; R-containing, Cu-containing, and B-containing compounds, and Li-containing glass, as sub-component. R is an alkali earth metal. R-containing compound greater than or equal to 0.2 part by mass and less than or equal to 4.0 parts by mass, contained in terms of oxide, Cu-containing compound of greater than or equal to 0.5 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, and B-containing compound greater than or equal to 0.2 part by mass and less than or equal to 3.0 parts by mass, contained in terms of oxide, to 100 parts by mass of main component. Li-containing glass of greater than or equal to 2 parts by mass and less than or equal to 10 parts by mass contained to total a 100 parts by mass of main component, and sub-component excluding Li-containing glass.