公开(公告)号：US20210249164A1

公开(公告)日：2021-08-12

申请号：US17049486

申请日：2019-04-08

Applicant: KOA CORPORATION

Inventor： Kazuhisa USHIYAMA ,  Natsuki IGUCHI ,  Yasuhiro KAMIJO ,  Hisakazu NAGATA

IPC: H01C17/00 ,  H01C17/242

Abstract: A chip resistor is capable of improving surge characteristic while finely adjusting a resistance value with high accuracy. A chip resistor includes a resistor which is print-formed such that a first meandering portion is consecutively connected to a second meandering portion across a rectangular adjustment portion. The adjustment portion is provided with a first trimming groove to lengthen a current path of the resistor, thereby improving the surge characteristic while coarsely adjusting a resistance value of the resistor to bring it close to a target resistance value. Furthermore, a second trimming groove is provided in an area of the second meandering portion where a current distribution is small, thereby finely adjusting the resistance value of the resistor to make it coincide with the target resistance value in accordance with a cutting amount of the second trimming groove.

公开(公告)号：US20220291160A1

公开(公告)日：2022-09-15

申请号：US17754126

申请日：2020-08-26

Applicant: Ntional Institute of Technology ,  KOA Corporation

Inventor： Shigenori MATSUSHIMA ,  Kenji OBATA ,  Kenichi GUCHI ,  Yukiko OTA ,  Hisakazu NAGATA ,  Koichi URANO

IPC: G01N27/12 ,  C01G49/00

Abstract: The gas sensor is provided with: a base material; a first electrode and a second electrode arranged on the base material; and a gas detection member connected to the first electrode and the second electrode, wherein the gas detection member contains flaky particles of alkaline earth ferrite.