公开(公告)号：US11530992B2

公开(公告)日：2022-12-20

申请号：US16637451

申请日：2018-08-02

申请人： Nitto Denko Corporation

发明人： Namiko Suzuki ,  Hiroyuki Higuchi ,  Koichi Nakamura ,  Masaya Nishigawara ,  Nahid Mohajeri

IPC分类号： G01N21/78 ,  G01N33/00 ,  G01N31/22

摘要： A gas detection element for detection of a measurement target gas is provided. The gas detection element includes a gas detection layer including a chemochromic pigment; and a spacer. The spacer is permeable to the measurement target gas, is disposed on a first surface of the gas detection layer, and has an area smaller than an area of the gas detection layer.

公开(公告)号：US10996174B2

公开(公告)日：2021-05-04

申请号：US16070068

申请日：2018-02-17

申请人： Nitto Denko Corporation

发明人： Koichi Nakamura ,  Nahid Mohajeri ,  Yu-chu Chen ,  Kujtim Bizati ,  Shinji Inokuchi ,  Namiko Suzuki ,  Hiroyuki Higuchi ,  Masahiko Hirose ,  Masaya Nishigawara

IPC分类号： G01N21/78 ,  G01M3/22 ,  G01N31/22 ,  G01N33/00 ,  G01M3/04

摘要： A gas sensing element includes a gas detection layer including a pigment, the gas detection layer including a first surface; and a backing material disposed on the first surface of the gas detection layer. When reducing gas causes the gas sensing element to change in color, a color change ΔL* of the gas sensing element is greater than or equal to 5.

公开(公告)号：US20220091080A1

公开(公告)日：2022-03-24

申请号：US17423996

申请日：2020-01-17

申请人： NITTO DENKO CORPORATION

发明人： Koichi Nakamura ,  Nahid Mohajeri

IPC分类号： G01N31/22 ,  G01M3/04

摘要： Described herein is an ammonia compound indicator comprising an adhesive and a chemochromic compound disposed therein. Also described are methods of making the aforedescribed elements and methods for indicating the presence of ammonia.