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:
Sep. 16, 1997
Filed:
Apr. 26, 1996
Albert Robbat, Jr, Andover, MA (US);
Yuriy V Gankin, Needham, MA (US);
Trustees of Tufts College, Medford, MA (US);
Abstract
This invention provides methods and apparatus for determining the presence or absence of a specific constituent in a mixture. The method includes the steps of (a) applying energy to the mixture to cause constituents in the mixture to produce characteristic patterns of spectral lines and detecting quantity values at the spectral lines, wherein a quantity value may represent a contribution of two or more constituents; (b) comparing detected quantity values for a number N of spectral lines from a pattern of spectral lines characteristic of the specific constituent with known quantity values for the N spectral lines; (c) determining whether the detected quantity values for the N spectral lines fall within a predetermined error range, and; (d) determining the presence of the constituent in the mixture when detected quantity values of a number of spectral lines less than N fall within the predetermined error range.