ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,278, issued on July 28, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).
"Gas concentration measurement device" was invented by Yohei Yamaguchi (Nagaokakyo, Japan) and Masako Tenpaku (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas concentration measurement device that includes: a waterproof housing including a wall that defines an internal space, the wall including an opening communicating between the internal space and an outside of the housing; a measurement instrument in the internal space, the measurement instrument constructed to measure a concentration of a gas; a gas permeable membrane covering the op...