Li Zheng

US Patent:

6553644, Apr 29, 2003

Filed:

Feb 9, 2001

Appl. No.:

09/781009

Inventors:

Nick Karmaniolas - San Jose CA
Wesley Hiroshi Tao - San Jose CA
Li Zheng - Campbell CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

B23Q 700

US Classification:

29559, 292814, 2960317, 2960322, 269 37, 269 55, 269 58, 269287, 269289, 269297, 269317

Abstract:

A device for processing workpieces utilizes a frame and a fixture. The frame has a perimeter with an opening, and inner and outer side walls. A pair of shelves are located in the opening for supporting a workpiece and a spring retains the workpiece on the frame. The fixture has work locations with elevators that are moved by an elevator handle. The fixture also has an engagement handle for actuating the springs. The workpieces may be simultaneously mounted to or removed from the frames with the fixture. The frames are loaded into the locations and both handles are rotated to raise the elevators and bend the springs. The workpieces are then placed on top of the elevators, and the elevator handle is rotated to lower the workpieces. Next, the engagement handle is rotated to release the springs to form assemblies that can be removed from the fixture.

US Patent:

6922890, Aug 2, 2005

Filed:

Nov 15, 2002

Appl. No.:

10/295382

Inventors:

Qing Dai - San Jose CA, US
Jennifer Qing Lu - San Jose CA, US
Dennis Richard McKean - Milpitas CA, US
Eun Row - San Jose CA, US
Li Zheng - Campbell CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K003/30

US Classification:

29841, 29855, 29856, 29858, 29867, 29883, 29885, 156268, 156344, 4272071, 42720808, 2642721, 26427211, 26427215, 438455, 438458, 438976

Abstract:

A method is provided for planarization of structures which minimizes step heights, reduces process steps, improves cleanliness, and provides increased ease of debond. Structures are placed with working surfaces facing down onto an adhesive layer such that structures remain fixed during heating. A bi-layer encapsulating film is used to achieve planarization. A carrier is bi-laminated with a thermoplastic film layer followed by a chemically inert protective polymer film layer that can withstand etch and cleaning processes. The thermoplastic layer is laminated on top of the carrier; the polymer layer is laminated on top of the joined thermoplastic layer and carrier. The carrier with bi-layer film is then placed onto the backside of the structures to resist chemical attack from the front side during photostrip and enable planarization. When heat is applied, the bi-layer encapsulating film melts and pushes the polymer layer into the gaps between structures thereby achieving complete planarization.

US Patent:

7000310, Feb 21, 2006

Filed:

Dec 12, 2003

Appl. No.:

10/734951

Inventors:

Christa Marie Bolig - San Jose CA, US
Richard D. Bunch - San Jose CA, US
Timothy Joseph Neumann - San Jose CA, US
Li Zheng - Campbell CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 5/127

US Classification:

2960317, 2960307, 156249

Abstract:

A method for handling workpieces such as hard disk drive sliders during a debonding process uses a fixture having two sets of finger-like projections that are interleaved. The sets are movable relative to each other to space apart the sliders after they are processed from their original row configuration. The post-processing separation is required to properly debond the sliders. The fingers on each set are closely interleaved to reduce the amount of displacement required to adequately separate the sliders for debonding. After the sliders are displaced, they are directly debonded into the inspection trays. This design eliminates the need for manual handling of the workpieces during these phases of manufacturing.

US Patent:

7263763, Sep 4, 2007

Filed:

Jun 27, 2005

Appl. No.:

11/168215

Inventors:

Qing Dai - San Jose CA, US
Jennifer Qing Lu - San Jose CA, US
Dennis Richard McKean - Milpitas CA, US
Eun Row - San Jose CA, US
Li Zheng - Campbell CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 5/127
H04R 31/00

US Classification:

2960316, 2960312, 2960318, 3602357, 451 5, 451 41

Abstract:

A method is provided for planarization of structures which minimizes step heights, reduces process steps, improves cleanliness, and provides increased ease of debond. Structures are placed with working surfaces facing down onto an adhesive layer such that structures remain fixed during heating. A bi-layer encapsulating film is used to achieve planarization. A carrier is bi-laminated with a thermoplastic film layer followed by a chemically inert protective polymer film layer that can withstand etch and cleaning processes. The thermoplastic layer is laminated on top of the carrier; the polymer layer is laminated on top of the joined thermoplastic layer and carrier. The carrier with bi-layer film is then placed onto the backside of the structures to resist chemical attack from the front side during photostrip and enable planarization. When heat is applied, the bi-layer encapsulating film melts and pushes the polymer layer into the gaps between structures thereby achieving complete planarization.

US Patent:

7421458, Sep 2, 2008

Filed:

Oct 15, 2004

Appl. No.:

10/966046

Inventors:

Jeff Taylor - Mountain View CA, US
Rachel Wang - Foster City CA, US
Li Zheng - Milpitas CA, US

Assignee:

Informatica Corporation - Redwood City CA

International Classification:

G06F 17/30

US Classification:

707203, 707 3, 717170

Abstract:

In various embodiments, the present invention provides methods and systems for creating version-stamps of database objects and for tracking, querying, retrieving, and deploying such versioned database objects in enterprise databases, data marts, or data warehouses. The database objects may be interrelated and may reference one another according to their accurate versions.

US Patent:

7741003, Jun 22, 2010

Filed:

Mar 30, 2004

Appl. No.:

10/814933

Inventors:

Nicholas I. Buchan - San Jose CA, US
Cherngye Hwang - San Jose CA, US
Timothy Reiley - Cupertino CA, US
Li Zheng - Campbell CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G03C 1/00
G11B 5/60

US Classification:

4302701, 4302711

Abstract:

A resist transfer pad and method of use are described for forming a uniform photoresist on the surface of a workpiece such as a slider. The resist transfer pad includes a layer of cured polydimethylsiloxane (PDMS) on a cushioning layer, e. g. silicone rubber, and an optional stiffening layer. The sliders are preferably mounted on a carrier or pallet. In one preferred embodiment the loaded resist transfer pads are applied to the slider surface by roll lamination where the loaded resist transfer pad is transported by a roller system using a cover-tape and pressed against the slider surface. Subsequently the cover-tape and the resist transfer pad are lifted off and the photoresist remains on the transducer. An alternative embodiment uses a vacuum, piston laminator to press the loaded resist transfer pad onto the surface of the transducer.

US Patent:

7927790, Apr 19, 2011

Filed:

May 24, 2006

Appl. No.:

11/440581

Inventors:

Binghui Shen - Glendora CA, US
Li Zheng - Temple City CA, US

Assignee:

City of Hope - Duarte CA

International Classification:

C12Q 1/70
C12Q 1/68

US Classification:

435 5, 435 6

Abstract:

FEN-1 is involved in processing HIV central DNA flap (CDF) and is a target for intervention of HIV-1 replication. Inhibition of HIV-1 CDF removal by expression of D181A FEN-1 mutant suppresses viral DNA replication, further demonstrating that FEN-1 is a target. Methods of identifying and using molecules that inhibit FEN-1 processing HIV-1 CDF and other methods of inhibiting FEN-1 processing are provided. Useful small molecules specifically suppress FEN-1 cleavage of HIV CDF but have little effect on FEN-1's function in RNA-DNA primer removal. Pentamidine inhibits HIV replication by suppressing FEN-1-mediated HIV-CDF processing.

US Patent:

8478801, Jul 2, 2013

Filed:

May 20, 2009

Appl. No.:

12/469577

Inventors:

Gregory M. Hutchins - San Francisco CA, US
Steven Kusalo - Fremont CA, US
Haripriya Rajagopal - Sunnyvale CA, US
Jairam Ranganathan - San Francisco CA, US
Li Zheng - Palo Alto CA, US

Assignee:

VMware, Inc. - Palo Alto CA

International Classification:

G06F 17/30

US Classification:

707829, 707803, 711 6

Abstract:

A method and software is described for recreating on a target datastore a set of hierarchical files that are present on a source datastore. A content identifier (ID) is maintained for each component of the set of hierarchical files. The content ID of a component is updated when its contents are modified. The child component is copied from the source datastore to the target datastore. The content ID corresponding to the parent component on the source datastore is compared with content IDs corresponding to files present on the target datastore. When a matching content ID is discovered, it infers a copy of the parent component. The matching file on the target datastore is associated with the copied child component so that the matching file becomes a new parent component to the copied child component, thereby recreating the set of hierarchical files on the target.