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:
Apr. 19, 1994
Filed:
Feb. 14, 1992
Horiba, Ltd., Kyoto, JP;
Abstract
A method and apparatus to determine the constituent ingredients in a sample by a spectroscopic procedure is disclosed. A Fourier transformation infrared spectrometer can secure data of a power spectrum of a sample and data of a power spectrum of a reference. A absorption spectrum of the sample from this respective data can be determined. A set of wave number points across the absorption spectrum of the sample that exhibit a predetermined linear characteristic can be selected and the absorption spectrum values corresponding to the set of wave number points can be used to calculate the concentrations of the constituent ingredients. A plurality of sets of wave number points can also be predetermined for a specific sample and limit values can be stored and compared to pick the most desirable set of wave number points for calculating the concentration of the constituent ingredients.