Wei E Chen

Address:

9316 Copenhaver Dr, Potomac, MD 20854

VIN:

2T2HK31U18C092622

Make:

LEXUS

Model:

RX 350

Year:

2008

US Patent:

6400150, Jun 4, 2002

Filed:

Apr 2, 2001

Appl. No.:

09/824511

Inventors:

Haiying Liu - Maplewood MN
Wei Chen - Roseville MN
Kamil Ugurbil - Minneapolis MN

Assignee:

Regents of the University of Minnesota - Minneapolis MN

International Classification:

G01V 300

US Classification:

324307, 324310, 324312, 324309, 324318, 324320

Abstract:

NMR spectroscopy data recovery methods and apparatus for improving the quality of an NMR spectrum are disclosed. The NMR spectrum is improved by acquiring more than the half spin-echo data signal and using an iterative numerical method to reconstruct the missing data points of the corresponding full symmetrical spin-echo data signal. The method includes filtering the initial data signal to extract a low-resolution phase term. The low-resolution phase term is used to form a phase-constrained initial data signal, which is Fourier-transformed to obtain a reconstructed data signal. The reconstructed data signal is modified to include the original spin-echo signal data. The formation of the reconstructed spin-echo data signal and subsequent modification is iterated until convergence is obtained. The reconstructed data signal is then Fourier-transformed to form a reconstructed NMR spectrum.

US Patent:

6401790, Jun 11, 2002

Filed:

Jun 9, 2001

Appl. No.:

09/877538

Inventors:

Lin Jun Dai - Azusa CA
Wei Chen - Azusa CA

Assignee:

Q.S.M. Enterprise, Inc. - Azusa CA

International Classification:

E06B 9264

US Classification:

160107, 1601761 R, 49 64

Abstract:

A magnetic dual glasses window structure includes a window blind, provided between two panes of glass, including tilt cords for supporting a plurality of slats and an operating system which includes a shaft attached to the tilt cords and a magnetic actuating device. The magnetic actuating device includes an actuating cord movably and encirclingly attaching to two end portions of the shaft, a pair of resilient elements attached to the actuating cord respectively for applying an urging force against the actuating cord, a magnetic seat connecting between the two resilient elements and positioned adjacent an inner surface of one of the panes of glass, and a magnetic slider positioned adjacent an outer surface of the pane of glass for magnetically driving the magnetic seat to move. Therefore, by sliding the magnetic slider, the actuating cord drives the shaft to rotate for controlling the tilt angle of each of the slats.

US Patent:

6544454, Apr 8, 2003

Filed:

Nov 21, 2000

Appl. No.:

09/625303

Inventors:

Wei Chen - Walnut CA 91789

International Classification:

B29C 4706

US Classification:

26417113, 26421111, 26417125

Abstract:

A manufacturing process of a construction strip includes the steps of (a) evenly mixing a predetermined amount of paint, talcum powder and volatile agent to form a plaster form coating mixture; (b) gradually passing an elongated strip body through an extrusion passage of an extrusion mold, wherein a uniform surrounding clearance between an interior wall of said extrusion passage and said strip body; (c) continuously injecting said coating mixture into said extrusion passage of said extrusion mold in order to fill said surrounding clearance, so that a uniform protective coating is evenly coated on said longitudinal surfaces of said strip body while said strip body is extruded from said extrusion mold; and (d) drying said protective coating to form a hard and durable protective coating shell integrally wrapped around said strip body.

US Patent:

6639405, Oct 28, 2003

Filed:

Feb 4, 2002

Appl. No.:

10/067180

Inventors:

Haiying Liu - Maplewood MN
Wei Chen - Roseville MN
Kamil Ugurbil - Minneapolis MN

Assignee:

Regents of the University of Minnesota - Minneapolis MN

International Classification:

G01V 300

US Classification:

324307

Abstract:

NMR spectroscopy data recovery methods and apparatus for improving the quality of an NMR spectrum are disclosed. The NMR spectrum is improved by acquiring more than the half spin-echo data signal and using an iterative numerical method to reconstruct the missing data points of the corresponding full symmetrical spin-echo data signal. The method includes filtering the initial data signal to extract a low-resolution phase term. The low-resolution phase term is used to form a phase-constrained initial data signal, which is Fourier-transformed to obtain a reconstructed data signal. The reconstructed data signal is modified to include the original spin-echo signal data. The formation of the reconstructed spin-echo data signal and subsequent modification is iterated until convergence is obtained. The reconstructed data signal is then Fourier-transformed to form a reconstructed NMR spectrum.

US Patent:

7023209, Apr 4, 2006

Filed:

Oct 9, 2001

Appl. No.:

09/974184

Inventors:

Xiaoliang Zhang - Minneapolis MN, US
Kamil Ugurbil - Minneapolis MN, US
Wei Chen - Roseville MN, US

Assignee:

Regents of the University of Minnesota - Minneapolis MN

International Classification:

G01V 3/00

US Classification:

324318

Abstract:

Apparatus and method for MRI imaging using a coil constructed of microstrip transmission line (MTL coil) are disclosed. In one method, a target is positioned to be imaged within the field of a main magnetic field of a magnet resonance imaging (MRI) system, a MTL coil is positioned proximate the target, and a MRI image is obtained using the main magnet and the MTL coil. In another embodiment, the MRI coil is used for spectroscopy. MRI imaging and spectroscopy coils are formed using microstrip transmission line. These MTL coils have the advantageous property of good performance while occupying a relatively small space, thus allowing MTL coils to be used inside restricted areas more easily than some other prior art coils. In addition, the MTL coils are relatively simple to construct of inexpensive components and thus relatively inexpensive compared to other designs. Further, the MTL coils of the present invention can be readily formed in a wide variety of coil configurations, and used in a wide variety of ways.

US Patent:

7155285, Dec 26, 2006

Filed:

Dec 11, 2003

Appl. No.:

10/733139

Inventors:

Xiaoming Wang - Rancho Santa Margarita CA, US
Huijian Zou - Shenzhen, Guangdong, CN
Wei Chen - Rancho Santa Margarita CA, US

International Classification:

A61N 1/18

US Classification:

607 45, 607 39, 607 40, 600 26

Abstract:

Alpha rhythm brain waves are related to mental and physical relaxation and healing. Based on the studies of bionics, this invention relates to inducing oscillatory alpha rhythm to the human body, and relates to the means of the alpha rhythm machine applied to human body. Research of the alpha rhythm of human brain wave patterns and EEG has indicated special recorded data of alpha rhythm brain waveform which is the bearing of the proper biological information of relaxing and healing. The apparatus was developed and built to construct and release the simulated human brain alpha rhythm signals which are at the frequencies ranging 8 Hz–14 Hz and at the amplitudes altered in high or low. Both the frequencies and the amplitudes are changing at a non-stationary random order in the duration of the event, respectively. The electrical signals are transformed via a transducer, into three forms of energy, 1, alpha rhythm electromagnetic energy and alpha rhythm interfering static magnetic energy; 2, alpha rhythm sub-audio acoustic oscillatory energy; and 3, alpha rhythm mechanical vibrational energy. The combining energies from the apparatus can benefit the whole human body or only the area affected by illness, for example, treating men's prostate problems or treating sleep disorders.

US Patent:

7555178, Jun 30, 2009

Filed:

Jul 20, 2007

Appl. No.:

11/781021

Inventors:

Wei Chen - Ellicott City MD, US

Assignee:

Infinera Corporation - Sunnyvale CA

International Classification:

G02B 6/26

US Classification:

385 27, 385 24, 398 82

Abstract:

A periodic optical filter for interleaving a plurality of optical signals to provide a multiplexed signal for transmission over an optical fiber is disclosed. The periodic optical filter includes a first optical filter constructed to receive at least two optical signals through an input port to provide at least one filtered optical signal. The periodic optical filter also includes a second optical filter, in communication with the first optical filter, constructed to receive the filtered optical signal from the first optical filter through an intermediate port to provide a multiplexed signal for transmission through an output port. At least one of the optical filters includes an infinite-impulse response filter and at least one of the optical filters includes a finite-impulse response filter. Methods of fabrication and methods of use including the periodic optical filter are disclosed.

US Patent:

7626041, Dec 1, 2009

Filed:

Jun 25, 2007

Appl. No.:

11/767573

Inventors:

Christopher S. Brook - King of Prussia PA, US
Wei Chen - Woodbury MN, US
Philip C. Dell'orco - King of Prussia PA, US
Lee M. Katrincic - King of Prussia PA, US
Ann Marie Louvet - King of Prussia PA, US
Choon K. Oh - Oaks PA, US
Paul G. Spoors - King of Prussia PA, US
Christopher Werner - King of Prussia PA, US

Assignee:

SmithKline Beecham (Cork) Ltd - County Cork

International Classification:

C07D 209/82

US Classification:

548444

Abstract:

The present invention relates to carvedilol phosphate salts, which include novel crystalline forms of carvedilol dihydrogen phosphate (i. e. , dihydrogen phosphate salt of 1-(carbazol-4-yloxy-3-[[2-(o-methoxyphenoxy) ethyl]amino]-2-propanol) and/or carvedilol hydrogen phosphate, etc. ), and/or solvates thereof, compositions containing the aforementioned salts and/or solvates, and methods of using the aforementioned salts and/or solvates to treat hypertension, congestive heart failure and angina, etc.