公开(公告)号：US20220185667A1

公开(公告)日：2022-06-16

申请号：US17600870

申请日：2020-02-13

Applicant: NAMICS CORPORATION

Inventor： Pawel CZUBAROW ,  Yoshitaka KAMATA ,  Toshiyuki SATO

IPC: C01B32/05 ,  C08L63/00 ,  H01C7/105

Abstract: A porous carbon has an ID/IG of 2.0 or more in a Raman spectrum measured by Raman spectroscopy with respect to the porous carbon wherein the IG is an accumulated intensity of a peak for G band around 1590 cm−1, and the ID is an accumulated intensity of a peak for D band around 1350 cm−1. The porous carbon has pores having a size of less than 1 μm. The porous carbon can be contained in a resin composition for producing a varistor element.

公开(公告)号：US20230042359A1

公开(公告)日：2023-02-09

申请号：US17786282

申请日：2020-12-04

Applicant: NAMICS CORPORATION

Inventor： Takashi YONEDA ,  Yoshitaka KAMATA ,  Noriyuki SAKAI ,  Hironobu TSUBURA ,  Satomi KAWAMOTO ,  Yoshito YAMADA

IPC: H01B1/22 ,  H05K9/00

Abstract: An electromagnetic shielding composition includes silver particles (A), and a first solvent (B). The first solvent (B) has at least one structure selected from the group consisting of a structure represented by the formula (1) and a structure represented by the formula (2) and has a boiling point of less than 200° C.

公开(公告)号：US20230139930A1

公开(公告)日：2023-05-04

申请号：US17908820

申请日：2021-03-01

Applicant: NAMICS CORPORATION

Inventor： Yoshitaka KAMATA ,  Toshiyuki SATO

IPC: C08K3/04

Abstract: A low-voltage varistor includes a cured body of a resin composition for forming the low-voltage varistor. The resin composition includes: (A) at least one selected from carbon nanotubes and carbon aerogels; and (B) at least one selected from epoxy resin and acrylic resin.

公开(公告)号：US20210155769A1

公开(公告)日：2021-05-27

申请号：US16770699

申请日：2018-12-04

Applicant: NAMICS CORPORATION

Inventor： Yoshitaka KAMATA

IPC: C08K3/04 ,  C08L63/00 ,  C08K5/09 ,  H01C7/10

Abstract: Provided are a resin composition for forming a varistor and a varistor capable of increasing freedom in the design of substrates, ICs, or electronics. The resin composition for forming a varistor includes (A) an epoxy resin, (B) a curing agent, (C) carbon nanotubes, and (D) a dispersant. The (C) carbon nanotubes may be single-walled carbon nanotubes, multi-walled carbon nanotubes, or a combination thereof. The (D) dispersant includes a polyalkyl oxide surfactant. The polyalkyl oxide surfactant has a polyalkyl ether skeleton in the molecule.

公开(公告)号：US20180197663A1

公开(公告)日：2018-07-12

申请号：US15860136

申请日：2018-01-02

Applicant: NAMICS CORPORATION

Inventor： Yoshitaka KAMATA ,  Pawel CZUBAROW ,  Toshiyuki SATO ,  Takayuki FUJITA

IPC: H01C7/105 ,  C08L63/00

CPC classification number: H01C7/105 ,  C08L63/00

Abstract: A resin composition which includes (A) an epoxy resin, (B) a curing agent, and (C) carbon nanotubes, wherein the carbon nanotubes contain therein semiconducting single-walled carbon nanotubes in an amount of 70% by weight or more. A cured product of a paste made from the resin composition can be used to form a varistor element.