Method and apparatus for spectroscopic comparison of compositions

Patent 5046846 Issued on September 10, 1991. Estimated Expiration Date:

March 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3896312

System for spectroscopic analysis of a chemical stream
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Inventor: Begley

Inventors

Assignee

The Lubrizol Corporation

Application

No. 327069 filed on 03/22/1989

US Classes:

356/326, Utilizing a spectrometer250/339.09, With calibration steps in measurement process250/339.12, Using sample absorption for chemical composition analysis702/22, Chemical analysis702/30Chemical property analysis

Examiners

Primary: McGraw, Vincent P.

Attorney, Agent or Firm

Franks; Robert A., Hunter; Frederick D., Collins; Forrest L.

Foreign Patent References

304232 EP. 02/12/1989

International Classes

G01J 003/32
G01N 021/35
G06F 015/46

Abstract

A method of analysis of and an apparatus for analysing a sample comprising the steps of: (A) examining at least one characteristic of a sample as a function of a variable parameter to obtain data, (B) normalizing the data with respect to a model, (C) making a comparison of the normalized data with reference data, and (D) determining from the comparison the quality of the sample. As a function of such determination of quality, control functions may be carried out with respect to a sample that was analyzed, such as a blend sample in a chemical processing plant.

Other References

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