David D Chi

US Patent:

6433383, Aug 13, 2002

Filed:

Jul 20, 1999

Appl. No.:

09/357333

Inventors:

Mark Ramsbey - Sunnyvale CA
Unsoon Kim - Santa Clara CA
Kenneth Wo-Wai Au - Fremont CA
David H. Chi - Sunnyvale CA
James Markarian - Los Altos CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H01L 27108

US Classification:

257315, 257314, 257411

Abstract:

A single interpoly dielectric layer is provided for use in semiconductor devices. The single interpoly dielectric layer being formed of silicon graded such that certain regions within the single interpoly dielectric layer are either oxygen-rich or nitrogen-rich. The single interpoly dielectric layer can be formed in-situ within a single deposition tool. In certain embodiments, the resulting single interpoly dielectric layer can be made thinner and/or can be formed to provide improved dielectric characteristics when compared to a conventional oxide-nitride-oxide (ONO) interpoly dielectric layer that has three separate and unique layers. Thus, the single interpoly dielectric layer is highly desirable for use in reduced-size semiconductor devices and/or semiconductor devices requiring improved data retention capabilities, such as non-volatile memory cells.

US Patent:

6458212, Oct 1, 2002

Filed:

Mar 31, 2000

Appl. No.:

09/539393

Inventors:

Fuodoor Gologhlan - Campbell CA
David Chi - Sunnyvale CA
Kent Kuohua Chang - Cupertino CA
Hector Serrato - Ceres CA
Jayendra Bhakta - Sunnyvale CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

C23C 1600

US Classification:

118715, 553852, 55463, 55521, 55487, 55486, 55525, 55DIG 30

Abstract:

One aspect of the present invention relates to a tetraethylorthosilicate chemical vapor deposition method, involving the steps of forming a film on a substrate using tetraethylorthosilicate in a chemical vapor deposition chamber; and removing tetraethylorthosilicate byproducts from the chemical vapor deposition chamber via a pump system and an exhaust line connected to the chemical vapor deposition chamber, the exhaust line comprising a mesh filter having a conical shape. Another aspect of the present invention relates to an exhaust system for removing tetraethylorthosilicate byproducts from a chemical vapor deposition chamber, containing an exhaust line connected to the chemical vapor deposition chamber, the exhaust line comprising a mesh filter having a conical shape via a pump system; and a pump system connected to the exhaust line for removing tetraethylorthosilicate byproducts from the processing chamber.

US Patent:

6498104, Dec 24, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/776308

Inventors:

Fuodoor Gologhlan - Campell CA
David Chi - Sunnyvale CA
Kent Kuohua Chang - Cupertino CA
Hector Serrato - Ceres CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H01L 21311

US Classification:

438695, 438257, 134 1, 134 13, 118715, 118719

Abstract:

In one embodiment, the present invention relates to a method of cleaning a low pressure chemical vapor deposition apparatus having TEOS material build-up therein involving contacting the low pressure chemical vapor deposition apparatus with a composition containing at least one lower alcohol. In another embodiment, the present invention relates to a system for cleaning a low pressure chemical vapor deposition apparatus having TEOS material build-up therein, containing a supply of a composition comprising at least one lower alcohol; an injection port for introducing the composition including at least one lower alcohol into the low pressure chemical vapor deposition apparatus; and a pump/vacuum system for removing crystallized TEOS material build-up from the low pressure chemical vapor deposition apparatus.

US Patent:

6605062, Aug 12, 2003

Filed:

Sep 2, 1999

Appl. No.:

09/389159

Inventors:

Bridget A. Hurley - San Francisco CA
Jenny E. Tsien - San Jose CA
David Chi - Santa Clara CA
Gregg A. Jackson - San Francisco CA
Steven James Bigus - San Jose CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 5178

US Classification:

60416413

Abstract:

A catheter and method of using same for support or exchange of a guidewire during a percutaneous procedure which has at least one lumen in an elongate shaft with a proximal port and a distal port in fluid communication via an inner lumen. The catheter has a longitudinal slit in the inner lumen beginning at the proximal end of the elongate shaft and extends distally. An elongate support member is secured to the elongate shaft to provide axial rigidity to the catheter. Optionally, a second inner lumen is disposed within the elongate shaft adjacent the aforementioned inner lumen which has an intermediate port disposed distally of the proximal end of the elongate shaft.

US Patent:

6613014, Sep 2, 2003

Filed:

Jun 9, 2000

Appl. No.:

09/590946

Inventors:

David Chi - Cerritos CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61M 3100

US Classification:

604 9301

Abstract:

A handle member for gripping a catheter shaft to facilitate advancement in a patients body lumen. The handle member is configured to be releasably secured to the catheter shaft. Further, the handle is longitudinally displaceable along at least a length of the catheter shaft, so as to be slidably positional along the shaft. The handle member may be detachably connected to an adapter on the proximal end of the catheter shaft. Additionally, one embodiment of the handle member has internal grooves on the outer wall of the handle member, so that the user would have finger placement holds. The handle member may be made of a softer material than the catheter shaft, and have a tapered outer surface for comfort of the user.

US Patent:

6702802, Mar 9, 2004

Filed:

Jun 15, 2000

Appl. No.:

09/596014

Inventors:

David Hancock - San Francisco CA
David Chi - Santa Clara CA
Michael S. Mirizzi - San Jose CA
Peter S. Brown - Palo Alto CA
Christopher C. Pfaff - Palo Alto CA
Brett W. Cryer - Sunnyvale CA
Misty L. Pyatt - Oceanside CA

Assignee:

Endovascular Technologies, Inc. - Santa Clara CA

International Classification:

A61M 2500

US Classification:

604524, 604525, 604264, 604104, 623 111, 623 113

Abstract:

The present invention is directed to a balloon catheter, such as a dilatation catheter and a stent delivery catheter with improved stiffness transition and specifically with no sudden changes in stiffness along the catheter length. The balloon catheters of the present invention may be used alone or be mounted with a stent in. The balloon catheters of the present invention may be used in peripheral, coronary, or neurovascular applications. The present catheter has more than one portion with different bending stiffness values, each portion comprising of components that gradually transition the bending stiffness of that portion to an adjacent portion, thus reducing the differential in bending stiffness in moving from one region to another, when the catheter is used alone or in combination with a stent in a stent delivery system.

US Patent:

6749628, Jun 15, 2004

Filed:

May 17, 2001

Appl. No.:

09/861473

Inventors:

Joseph R. Callol - San Francisco CA
Brian D. Brandt - San Jose CA
Nazanine Matin - Palo Alto CA
Hans F. Valencia - Holbrook MA
W. Stan Wilson - Missoula MT
Steve Bigus - San Jose CA
David Chi - San Francisco CA
Brenda Cho - San Jose CA

Assignee:

Advanced Cardiovascular Systems, Inc. - Santa Clara CA

International Classification:

A61F 206

US Classification:

623 115, 623 135

Abstract:

The present invention provides for an improved stent design and stent delivery catheter assembly for repairing a main vessel and a side branch vessel forming a bifurcation. The present invention includes a trap door stent design, a stent delivery catheter assembly, an apparatus for crimping the stent and the method for crimping the stent onto the catheter assembly, and the method for delivering and implanting the stent in a bifurcated vessel. More particularly, the invention relates to a stent having rings aligned along a common longitudinal axis and connected by links, where the stent has a proximal section, a distal section and a central section. The number of rings and the expanded diameter of the sections is varied to create a âtrap doorâ capable of expanding to a slightly larger diameter than the proximal section and distal section of the stent. The stent is implanted at a bifurcation so that the proximal section and distal section are in the main vessel, and the central section covers at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel.

US Patent:

7689580, Mar 30, 2010

Filed:

Mar 27, 2006

Appl. No.:

11/277585

Inventors:

Anping Wang - Redwood City CA, US
David Chuen Chi Lam - Sunnyvale CA, US
Avinash Dabholkar - Fremont CA, US

Assignee:

Oracle International Corporation - Redwood Shores CA

International Classification:

G06F 7/00
G06F 17/30

US Classification:

707102, 7071041, 707 3, 707 7

Abstract:

Methods and apparatus for creating a search framework that provides a semantic interface for searching transactional applications are disclosed. According to one aspect of the present invention, a method for enabling at least one transactional application to be searched includes creating a canonical object associated with the transactional application and indexing data associated with the transaction application. The method also includes creating an index store using information associated with the canonical object. The index store is associated with the indexed data. Finally, a semantic engine is interfaced with the index store.