Ming Chih Yu

US Patent:

7034163, Apr 25, 2006

Filed:

Sep 5, 2003

Appl. No.:

10/656867

Inventors:

Brian L. Pagenkopf - Austin TX, US
Ming Yu - Austin TX, US

Assignee:

Board of Regents The University of Texas System - Austin TX

International Classification:

C07D 207/06

US Classification:

548531

Abstract:

An improved and highly efficient method for the preparation of 2-R(R=alkyl, aryl, H) pyrroles from nitrites (RCN, R=alkyl, aryl) is described using Lewis acid activated donor-acceptor cyclopropanes to react with aliphatic, aromatic, branched, α,β-unsaturated, or otherwise functionalized nitrites in a cascade [3+2] dipolar cycloaddition, dehydration and tautomerization sequence.

US Patent:

20080265035, Oct 30, 2008

Filed:

Apr 25, 2007

Appl. No.:

11/739888

Inventors:

Igor Vinogradov - New York NY, US
Edward D. Barkan - Miller Place NY, US
Mark Drzymala - Commack NY, US
Ming Yu - South Setauket NY, US

Assignee:

Symbol Technologies, Inc. - Holtsville NY

International Classification:

G06K 7/10

US Classification:

23546241

Abstract:

An imaging system for an imaging-based bar code reader for capturing an image of a target bar code. In one exemplary embodiment, the imaging system includes: a sensor array including an array of photosensitive elements for converting, light impinging on the array of photosensitive elements into electrical signals based on light intensity; an imaging lens system for focusing light from a field of view onto the sensor array, the imaging lens system including a first lens assembly and a second lens assembly, the first lens assembly defining a first field of view and the second lens assembly defining a second field of view, the first and second fields of view being different; and a control for selectively choosing between the first and second fields of view for imaging the target bar code.