The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2025
Filed:
Mar. 31, 2023
Shimadzu Corporation, Kyoto, JP;
Kosuke Uchiyama, Kyoto, JP;
Tomoyuki Oshiro, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
Provided is a TOFMS having a measurement unit in which target ions are accelerated and sent into a flight space within which an electric field for causing ions to fly is created. A data-analysis processor () creates a spectrum based on data acquired by the measurement unit, where the spectrum shows a relationship between ion intensity and time-of-flight or m/z value. An index calculator () calculates, as an index concerning a peak in the spectrum, a time-of-flight or m/z-value difference between a midpoint of a first peak width at an intensity which equals the peak-top intensity multiplied by a first ratio and a midpoint of a second peak width at an intensity which equals the peak-top intensity multiplied by a second ratio smaller than the first ratio. An evaluation result storage section () evaluates the peak symmetry from the index and stores an evaluation result.