Mike H Chen

US Patent:

6542629, Apr 1, 2003

Filed:

Jul 22, 1999

Appl. No.:

09/360348

Inventors:

John W. Wu - Rancho Palos Verdes CA
Mike C. Chen - Cerritos CA
Zhigang Fan - Webster NY
Kien A. Phong - Cerritos CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G06K 900

US Classification:

382135, 356 71, 902 7

Abstract:

A method and apparatus for preventing or inhibiting effective reproduction of documents such as currency, checks, stock certificates, and any other printed document including a pre-defined security mark printed therein. The subject method and apparatus operate to effect a multi-step review of all digital image data acquired from a printed document to be reproduced for purposes of locating any potential security marks and further examining same for purposes of positively identifying a potential security mark as an actual security mark. If a mark is located and verified to be an authentic security mark, effective reproduction of the printed document will not be permitted and/or other security measures will be taken. A pretest of a mark consists of deleting the fine line patterns that may be printed on top of the mark by smoothing the data in an averaging process, and then determining the difference between the density of the darkest and lightest pixels in the area. A difference smaller than a predetermined value means that the mark is not valid.

US Patent:

D588335, Mar 17, 2009

Filed:

Apr 21, 2008

Appl. No.:

29/317009

Inventors:

Mike Chen - Rowland Heights CA, US

International Classification:

0202

US Classification:

D 2717

US Patent:

20070242039, Oct 18, 2007

Filed:

Apr 17, 2006

Appl. No.:

11/379049

Inventors:

Mike Chen - Arcadia CA, US
Fuliang Cho - San Jose CA, US
Futong Cho - Milpitas CA, US
Liang Koh - Fremont CA, US
Hsin Pan - Fremont CA, US

International Classification:

G09G 5/08

US Classification:

345157000

Abstract:

Pointing device providing security means are disclosed. A pointing device is designed to be able to read or write various cards (e.g., tags, IC or magnetic cards, etc.) and communicate securely with a host device. In one embodiment, the pointing device includes a card detector that communicates with a card, and a security engine configured to automatically establish a secured communication channel with a host device when a software module is activated in the host device such that data exchanged between the card and the host device is secured.

US Patent:

20080057577, Mar 6, 2008

Filed:

Apr 6, 2007

Appl. No.:

11/697404

Inventors:

Frances Arnold - Pasadena CA, US
Peter Meinhold - Pasadena CA, US
Matthew Peters - Pasadena CA, US
Rudi Fasan - Brea CA, US
Mike Chen - Pasadena CA, US

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

C07K 14/32
C07K 1/107
C12N 1/19
C12N 1/21
C12N 5/10

US Classification:

435348000, 435252300, 435254200, 435325000, 530350000, 530402000, 536023700

Abstract:

This invention relates to modified hydroxylases. The invention further relates to cells expressing such modified hydroxylases and methods of producing hydroxylated alkanes by contacting a suitable substrate with such cells.

US Patent:

20090113093, Apr 30, 2009

Filed:

Oct 29, 2007

Appl. No.:

11/926141

Inventors:

Mike Chen - Arcadia CA, US

International Classification:

G06F 13/00
H01R 31/00
G08B 21/00

US Classification:

710 74, 439638, 3406362

Abstract:

A mobile storage device is disclosed to include a connection interface connectable to an external electronic apparatus, an adapter interface for the connection of a mobile electronic device, a data storage device formed of a CPU, a charging unit, a voltage converter, a power indicator unit, a signal switch, a memory and a control chip. By means of the control of the CPU and the control of the signal switch and the control chip, storage data is transferable between the external electronic apparatus and the mobile electronic device or between the external electronic apparatus and the memory of the data storage device, and the battery of the charging unit or the battery of the mobile electronic device is chargeable by the external electronic apparatus.

US Patent:

20100297091, Nov 25, 2010

Filed:

May 14, 2010

Appl. No.:

12/780831

Inventors:

James J-L WANG - Monterey Park CA, US
Mike CHEN - Duarte CA, US

International Classification:

A61K 35/12
A61N 7/00
C07H 21/04
C12N 15/63
C12N 15/85
C12N 15/88
C12N 15/861
C12N 5/10
A61K 31/7088
A61P 35/00

US Classification:

424 9321, 604 22, 536 231, 536 232, 4353201, 435325, 514 44 R

Abstract:

In certain embodiments, an expression construct is provided that contains a tissue-specific promoter such as tyrosinase linked to one or more cytotoxin genes. The cytotoxin genes may be saporin genes. In certain embodiments, a vector is provided that contains an expression construct as discussed above. The vector may be an adeno-associated virus or an adenovirus. Further, neural stem cells may be provided that contain and/or produce a vector, which in turn contains an expression construct containing a tissue-specific promoter linked to one or more cytotoxin genes. In certain embodiments, methods of using the neural stem cells provided herein for production and delivery of an animal virus vector are provided. Methods for treating melanomas in a subject in need thereof are also provided by delivering an expression construct that contains a tissue-specific promoter linked to one or more cytotoxins. In certain embodiments, the melanoma is metastatic, and in certain embodiments the melanoma is a brain melanoma.

US Patent:

20110198395, Aug 18, 2011

Filed:

Feb 16, 2010

Appl. No.:

12/706449

Inventors:

Mike CHEN - Arcadia CA, US

International Classification:

G06K 7/00
G06Q 40/00

US Classification:

235380

Abstract:

A handheld mobile credit card reader includes a handy housing having a clamping space for holding a mobile electronic device, a card reader module mounted in a compartment in the housing and having a card slot set in alignment with a card-sliding slot at the front side of the housing for allowing a person to slide an electronic card therethrough and a card reader unit adapted for reading data from the electronic card being moved through the card slot, and a signal transmission device set in the front side of the housing for the connection of the attached mobile electronic device and electrically connected with the card reader unit for transmitting fetched data from the cad reader unit to the attached mobile electronic device for enabling the attached mobile electronic device to transmit the data to a remove remote credit card transaction processing center wirelessly to make a payment.

US Patent:

6317524, Nov 13, 2001

Filed:

Apr 29, 1999

Appl. No.:

9/301899

Inventors:

John W. Wu - Rancho Palos Verdes CA
Mike C. Chen - Cerritos CA
Zhigang Fan - Webster NY
Kien A. Phong - Cerritos CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G06K 932

US Classification:

382298

Abstract:

This algorithm is a method for resizing and resampling an image in one step. In the vertical, process or slow scan, direction, from the resampling ratio and from the image size variation, an algorithm can compute where, on the page, the scan lines may be deleted. For a numerical example, if the input is 400 pixels per unit time, resampling of four to one would yield one scan line every 1/100 of a unit. If, in addition, the image has to be reduced by 5%, then the final output would be one scan line every 1/95. sup. th of a time unit. This algorithm accomplishes this result by using a running sum of error terms. Simply stated, if it is known that the previous output scan was output at exactly the right time, the error is zero, but if the scan was output too soon or too late, there will be an error term. For each new scan that is now output, 1/400. sup. th of a time unit is added to the error term.