Mary A Leugers

US Patent:

6855901, Feb 15, 2005

Filed:

Apr 19, 2002

Appl. No.:

10/126252

Inventors:

Robert D. Guenard - Lake Jackson TX, US
Muhammad A. Shafi - Lake Jackson TX, US
Terry W. Glass - Richwood TX, US
Mary A. Leugers - Midland MI, US
John T. Rich - Lebanon TN, US

Assignee:

National Recovery Technologies, Inc. - Nashville TN

International Classification:

B07C005/00

US Classification:

209577, 25033912

Abstract:

An apparatus and process that makes use of spectral information in the mid-infrared range (400 to 4500 cm) to identify recyclable materials containing barrier polymers from recyclable materials not containing barrier polymers, which includes projecting light containing the mid-infrared (MIR) range onto materials to be analyzed, dispersing the MIR light that has reflected from or passed through the materials or both into various wavelengths, measuring the intensity of the MIR light at least one wavelength responsive to differences between the materials, measuring the intensity of the MIR light at least one wavelength not responsive to differences between the materials in order to provide a reference, and comparing the measurements in order to identify barrier materials from non-barrier materials.

US Patent:

8246856, Aug 21, 2012

Filed:

Jul 28, 2008

Appl. No.:

12/667808

Inventors:

Mary Anne Leugers - Midland MI, US
Brian C. Nickless - Bay City MI, US
Michael S. Paquette - Midland MI, US
Robert C. Cieslinski - Midland MI, US
Shu Tao Chen - Shanghai, CN

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C04B 14/00

US Classification:

252378R, 4234151, 423448

Abstract:

A process for preparing oxidized graphite that provides exfoliated graphene, preferably with high surface area. The process uses considerably less chlorate than previously known systems.

US Patent:

20010043533, Nov 22, 2001

Filed:

Feb 2, 2001

Appl. No.:

09/776062

Inventors:

Jerry Hahnfeld - Midland MI, US
Walter Buzanowski - Midland MI, US
Mary Leugers - Midland MI, US
Marianne McKelvy - Midland MI, US
Henri-Luc Martin - Midland MI, US
Thomas Wainerdi - Katy TX, US

International Classification:

G11B007/00

US Classification:

369/053220

Abstract:

An optical reader/player for reading and reproducing signals stored in an optical recording medium (CD, DVD, HD-DVD) possessing specific physical characteristics. If the measured characteristics of the polymer of the optical medium do not coincide with those of polymers authorized to be used to make optical recording media for the reader/player, the optical medium will not be read or played.

US Patent:

20040002162, Jan 1, 2004

Filed:

Jun 19, 2003

Appl. No.:

10/465428

Inventors:

Mary Leugers - Midland MI, US
David Neithamer - Midland MI, US
Jack Hetzner - Reese MI, US
Matthew Krause - Midland MI, US

International Classification:

B32B027/04
G01N021/62

US Classification:

436/171000, 422/102000

Abstract:

A sample holding array is provided which is particularly advantageous for various IR and near IR transmission spectroscopy analysis that yields high quality spectra with minimal artifacts. The sample holding array may also be used desirably with slight modifications for Raman analysis, x-ray fluorescence and nanoindentation.

US Patent:

20100110220, May 6, 2010

Filed:

Nov 9, 2009

Appl. No.:

12/615093

Inventors:

Mary Anne Leugers - Midland MI, US
Tzu-Chi Kuo - Midland MI, US
Jodi Milhaupt Mecca - Midland MI, US
Carol Elaine Mohler - Midland MI, US

Assignee:

DOW GLOBAL TECHNOLOGIES INC. - Midland MI

International Classification:

G06K 9/00
G01N 21/59
H04N 5/222

US Classification:

3482221, 356436, 382100, 348E05022

Abstract:

A turbidity measurement system includes a sample assembly that contains a plurality of samples, a light source that illuminates the sample assembly, and a light detection system that includes a two-dimensional light-sensitive array. The light-sensitive array is simultaneously exposed to light transmitted through each of the samples in the sample assembly. The exposure is analyzed to determine a mean transmitted light intensity for each sample and to calculate a turbidity value for each sample based on its mean transmitted light intensity. Multiple exposures may be taken during a measurement period so as to obtain time-resolved turbidity measurements of the samples. The temperature of the samples may be varied during the measurement period so as to measure turbidity as a function of temperature.

US Patent:

20110280787, Nov 17, 2011

Filed:

Jan 19, 2010

Appl. No.:

13/145572

Inventors:

Shu Tao Chen - Shanghai, CN
Michael S. Paquette - Midland MI, US
Mary A. Leugers - Midland MI, US

International Classification:

C01B 31/00
C01B 31/04

US Classification:

4234151, 423448

Abstract:

The present invention relates to a nitrate salt-based process for preparing a graphite oxide. The invention nitrate salt-based process employs starting materials comprising a sulfuric acid, an inorganic nitrate salt, an amount of water, a first amount of chlorate salt, and a graphite.

US Patent:

20120243842, Sep 27, 2012

Filed:

Nov 3, 2010

Appl. No.:

13/514162

Inventors:

Thomas S. Lin - Whippany NJ, US
Anny Flory - South Plainfield NJ, US
Dirk B. Zinkweg - Flemington NJ, US
Jeffrey M. Cogen - Flemington NJ, US
Mary Anne Leugers - Midland MI, US
Weijun Zhou - Lake Jackson TX, US

International Classification:

G02B 6/02
G02B 6/00

US Classification:

385123, 385142

Abstract:

Plastic optical fibers or plastic optical fiber cores with good high temperature resistance to optical attenuation loss are prepared from a cyclic block copolymer characterized by a: A. Weight ratio of hydrogenated conjugated diene polymer block to hydrogenated vinyl aromatic polymer block of 35:65 to 10:90; B. Number average molecular weight (Mn) of from 40,000 to 150,000, grams per mole (g/mol); and C. Hydrogenation level such that each hydrogenated vinyl aromatic polymer block and each hydrogenated conjugated diene polymer block has a hydrogenation level of at least 95 percent.

US Patent:

51660733, Nov 24, 1992

Filed:

May 5, 1989

Appl. No.:

7/347692

Inventors:

Steven M. Lefkowitz - Walnut Creek CA
Mary A. Leugers - Midland MI
Steven J. Brownell - Midland MI
Deborah C. Helmer - Midland MI
Patrick E. Kastl - Midland MI
Ray Chrisman - Midland MI
Patrick W. Langvardt - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

H01L 7000

US Classification:

436 57

Abstract:

The invention is an optical sensor useful for the detection of ionizing radiation emitted from an analyte in a fluid. The sensor is composed of a permeable scintillator having a high surface area to scintillator volume ratio and an optical waveguide located in working relation to the scintillator to collect light photons generated in response to an ionizing radiation source. The sensor is especially useful for biomedical applications. Increased sensitivity allows for miniaturization and implantation in a blood vessel of a small experimental animal.