Eastman Chemical Company

Isotag Technology, Inc.

Gregory Wayne Nelson

Vincent Alvin Nicely

Norma Lindsey Buchanan

James John Krutak, Sr

Daniel Charles Alsmeyer

Roger Dale Edwards

Michael Eugene Donelson

Sam Richard Turner

Michael John Cyr

Tony Wayne Helton

Clinton Cherry

Horst Clauberg

Scott Arnold Hanson

Eric Gray Olsen

Barbara Crawford Jackson

James Edward Moore

Randy Barnett Meade

G Russell Owens

The invention provides a method for measuring the thickness, or non-uniformity of thickness, of one or more layers of a film or article such as a preform. At least one layer contains a known concentration and a substantially uniform distribution of fluorophores. The fluorophores are added to the one or more layers in sufficient quantity to impart fluorescence capable of detection by a detector when exposed to electromagnetic radiation at absorbing wavelengths. The layers of the invention may be made from polymeric material, non-polymeric material, or combinations thereof.

Determination of layer thickness or non-uniformity of layer thickness based on fluorophore additives

A method for marking or tagging individual microparticles using a near infrared fluorophore for identification is provided. The near infrared fluorophore is included with one or more layers comprising the microparticle. Desirably, the coating layers contain colorants such as dyes and/or pigments which increases the total possible combinations that may be used to identify the marked material. There is further provided a method for marking a material using these microparticles containing a near infrared fluorophore.

Method for marking items for identification

Methods for marking digital compact discs as a means to determine its

The present invention discloses a process for producing molded, shaped or extruded articles comprising the steps of:

Process for producing pet articles with low acetaldehyde

Disclosed is a spectroscopic probe apparatus useful for Raman, near infrared, luminescence, ultraviolet or visible spectroscopies that is formed with a robust method of construction using a molten metal soldering technique. The disclosed method and apparatus provides an optical probe that is easy to manufacture yet able to withstand drastic environmental conditions without damage and produce useful spectroscopic results under such conditions.

Robust spectroscoptic optical probe

Robust spectroscopic optical probe

Disclosed is a process for producing molded polyester articles having a low acetaldehyde content by

Process for producing polyester articles having low acetaldehyde content

Disclosed is a process for removing acetaldehyde from polyester which comprises the steps of

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Kingsport, TN, United States of America

Gregory Wayne Nelson