John C Huang

US Patent:

6552889, Apr 22, 2003

Filed:

Jul 17, 2001

Appl. No.:

09/908178

Inventors:

John Huang - San Jose CA
Hamza Yilmaz - Saratoga CA
Mohamed N. Darwish - Campbell CA
Wharton McDaniel - San Jose CA
Kyle Terrill - Santa Clara CA
Peter Tu Dang - San Jose CA

Assignee:

Vishay Siliconix - Santa Clara CA

International Classification:

H02H 300

US Classification:

361 931

Abstract:

A power FET and a replica FET on a semiconductor chip coupled to a logic control circuit on a second semiconductor chip within a single housing. A power FET and a scaled down replica of the power FET are disposed on a semiconductor chip. The power FET is used as a switch to couple a DC power source to a load. A fraction of the power FET drain current passes through the replica FET and an external resistance. When the voltage across the external resistance exceeds a maximum value based upon the maximum allowable power FET drain current, the logic control circuit enters into a pulsed gate (PG) mode of operation. The first step in the PG mode is to switch both FETs into a non-conducting state for a predefined period of time. After this time period, a ramp voltage applied between gate and source of both FETs will switch them back into a current conducting state while holding the power FET drain current below its upper limit in the presence of a high capacitance load. If the voltage across the external resistance increases above the maximum, the PG mode of operation continues.

US Patent:

7376832, May 20, 2008

Filed:

Apr 21, 2003

Appl. No.:

10/420065

Inventors:

Catherine C. Diep - Cupertino CA, US
John W. Huang - Warren NJ, US
Paul J. Wanish - Poughkeepsie NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 9/00

US Classification:

713155

Abstract:

A technique for establishing security in a publish/subscribe data processing broker network is presented. The technique includes providing a security extension module from a publisher to a broker of the network, wherein the security extension module is for a topic asset of the publisher. The broker employs the security extension module, responsive to receipt of a request from a subscriber for the topic asset, to authenticate the request at the broker before pushing the topic asset of the publisher to the subscriber. In addition to authenticating the request, the security mode extension can be employed to authorize the request, and to automatically forward messages to the publisher providing information on when topic asset access by a subscriber begins and ends.

US Patent:

7686472, Mar 30, 2010

Filed:

Jan 29, 2008

Appl. No.:

12/022102

Inventors:

John Huang - South San Francisco CA, US

Assignee:

PentagonLight - South San Francisco CA

International Classification:

F21L 4/00

US Classification:

362202, 362109, 362119, 362253, 362208

Abstract:

A self-defense flashlight includes sharp edges positioned around the head end. A sharp edge protector can be positioned so as to surround and protect the sharp edges, when the flashlight is not being used for self-defense purposes. When needed, the sharp edge protector can be moved so as to expose the sharp edges, allowing the flashlight to be used as a weapon. The protectable sharp edges can also be positioned around the tail end of the self-defense flashlight.

US Patent:

7996668, Aug 9, 2011

Filed:

Apr 7, 2008

Appl. No.:

12/098571

Inventors:

Catherine C Diep - Cupertino CA, US
John W Huang - Warren NJ, US
Paul J Wanish - Poughkeepsie NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 9/00

US Classification:

713155

Abstract:

A technique for establishing security in a publish/subscribe data processing broker network is presented. The technique includes providing a security extension module from a publisher to a broker of the network, wherein the security extension module is for a topic asset of the publisher. The broker employs the security extension module, responsive to receipt of a request from a subscriber for the topic asset, to authenticate the request at the broker before pushing the topic asset of the publisher to the subscriber. In addition to authenticating the request, the security mode extension can be employed to authorize the request, and to automatically forward messages to the publisher providing information on when topic asset access by a subscriber begins and ends.

US Patent:

20080286315, Nov 20, 2008

Filed:

Jan 30, 2008

Appl. No.:

12/022854

Inventors:

John Huang - San Carlos CA, US
Ding Chang - San Carlos CA, US
Feng Ping Shan - Shenyang, CN

Assignee:

Penta Biotech, Inc. - Union City CA

International Classification:

A61K 39/00
A61K 35/12
A61P 37/00
C12N 5/06

US Classification:

4242771, 424 937, 435375, 4241841

Abstract:

The present invention provides a method of stimulating dendritic cells, comprising contacting the dendritic cells with methionine enkephalin. The present invention also provides methods of enhancing an immune response to an antigen in a mammal. In a first method, dendritic cells are isolated from the mammal. The dendritic cells are then contacted with methionine enkephalin for a time sufficient to stimulate the cells. Next, the stimulated dendritic cells are contacted with the antigen of interest for a time sufficient for the cells to process the antigen. The dendritic cells are then injected into the mammal. The dendritic cells may be injected into the animal either on their own, or along with methionine enkephalin and/or the antigen. In a second method, the antigen of interest and methionine enkephalin are administered to the mammal. The present invention also provides compositions for administration to a mammalian subject having a tumor.

US Patent:

20090154149, Jun 18, 2009

Filed:

Dec 14, 2007

Appl. No.:

11/957267

Inventors:

John HUANG - South San Francisco CA, US

International Classification:

F21L 4/08
H02J 7/00

US Classification:

362183, 320108

Abstract:

A rechargeable flashlight uses induction for charging, and thus does not utilize external contacts. The flashlight is cylindrically shaped, and has a secondary coil wrapped around a portion of the cylindrical body. The flashlight is placed within a ring shaped charger with a primary coil, such that the primary coil is wrapped around the secondary coil. This greatly maximizes the amount of interfacing area between the two coils, without adversely affecting the reflector design. This allows for the charging of a high powered flashlight, without requiring the flashlight to have a disadvantageously sized or constructed head. Furthermore, the primary coil of the charger can advantageously serve as a mechanical support for the flashlight.

US Patent:

20100016209, Jan 21, 2010

Filed:

Dec 7, 2006

Appl. No.:

12/096152

Inventors:

John Huang - San Carlos CA, US
Ding Chang - San Carlos CA, US
Fengping Shan - Shenhe District, CN

Assignee:

PENTA BIOTECH, INC. - Union City CA

International Classification:

A61K 38/03
A61P 35/00

US Classification:

514 2

Abstract:

The present invention provides a method of decreasing side effects in a human or animal cancer patient due to radiation therapy or chemotherapy. With this method, methionine enkephalin is administered to the patient at least one time per week for a first time period, where the first time period is at least three weeks. In one embodiment, the first time period is one or two months. Methionine enkephalin is then administered to the patient one time per month for a second time period, where the second time period is at least one month, and where the second time period is consecutive to the first time period. In one embodiment, the total term of methionine enkephalin treatment is at least six months. Methionine enkephalin may be administered to the patient at the same time as, before, or after administration of radiation or chemotherapy.

US Patent:

20110161289, Jun 30, 2011

Filed:

Dec 30, 2009

Appl. No.:

12/649829

Inventors:

Mingliang Pei - Palo Alto CA, US
Oanh Hoang - Fremont CA, US
Ruiping Sun - Fremont CA, US
John Huang - San Ramon CA, US

Assignee:

VeriSign, Inc. - Mountain View CA

International Classification:

G06F 17/30
G06F 21/00

US Classification:

707613, 707803, 707783, 707634, 707E17005, 707E17032, 707E17044

Abstract:

Systems and methods for synchronizing verification data in a distributed database including client and server databases. The server database may exchange verification data regarding one-time passwords to multiple client databases. An update to the server database may be initiated based on information stored in the client database by pushing updated verification information from the client database to the server database via an SSL tunnel. An update to the client database may be initiated based on information stored in the server database by pulling updated verification data from the server database to the client database via an SSL tunnel. The client database and the server database may include a two-dimensional data field including the verification data and an associated key identifier, and a site ID. The site ID may include a unique identifier to identify the respective database in which it is included. The data field may include a sequence number assigned to each row of data that increases every time the row of information is updated. The client database and the server database may also include a replication tracking table including a record of the last known update to a remote database. Data fields that require updating may be determined based on the site ID and a comparison of the sequence numbers from the replication tracking table and the server's database.