Ka Lit Wong

US Patent:

6580266, Jun 17, 2003

Filed:

Nov 2, 2001

Appl. No.:

10/053016

Inventors:

Bradley Frederick Baumgartner - Los Banos CA
Shanlin Duan - Fremont CA
Yan Liu - Cupertino CA
Bob C. Robinson - Hollister CA
Li Tang - Fremont CA
Ka Chi Wong - Fremont CA

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G01R 3312

US Classification:

324212, 29 9001

Abstract:

An apparatus and method for detecting and marking delamination defects on thin film disks are disclosed. The apparatus includes a read/write (R/W) head and a burnishing head mounted on separate arms that access the disk while spinning on the test stand. The controller uses the R/W head to perform an initial magnetic test of selected areas on the disk to establish an initial defect map. The burnish head is then flown over the surface for an extended time to accelerate and open up the latent delamination defects by impacting protruding material. The R/W head is then used to perform a second magnetic test which is compared against the first test to identify the delamination defects which have been developed by the burnishing. The delamination defects are then marked with a magnetic pattern which aids in optically locating the defect during subsequent failure analysis.

US Patent:

6764952, Jul 20, 2004

Filed:

Mar 13, 2002

Appl. No.:

10/099232

Inventors:

Jengyi Yu - San Jose CA
Ka Shun Wong - San Jose CA
Sanjeev Jain - Santa Clara CA
Somnath Nag - Saratoga CA
Haiying Fu - West Linn OR
Atul Gupta - Mountain View CA
Bart J. Van Schravendijk - Sunnyvale CA

Assignee:

Novellus Systems, Inc. - San Jose CA

International Classification:

H01L 2144

US Classification:

438687, 438778, 438791, 438958

Abstract:

Two sequential treatments within a chemical vapor deposition chamber, or within sequential chambers without a vacuum break, are performed on a copper layer to clean and passivate the copper surface prior to deposition of a copper diffusion barrier layer or a dielectric layer. The first treatment includes an ammonia, a hydrogen, or a hydrocarbon plasma cleaning of the copper surface followed by a short initiation of an organosilane precursor or a thin silicon nitride layer. A copper diffusion barrier layer may then be formed over the pretreated copper surface using an organosilane plasma, with or without a carbon dioxide or a carbon monoxide, or a silane with a nitrogen gas and an ammonia gas. Copper diffusion is retarded and film adhesion is improved for a dielectric layer or a copper diffusion barrier layer on the copper surface.

US Patent:

7746476, Jun 29, 2010

Filed:

Jul 11, 2007

Appl. No.:

11/776452

Inventors:

Joseph R. Demers - Glendale CA, US
Ka Kha Wong - Alhambra CA, US

Assignee:

Emcore Corporation - Albuquerque NM

International Classification:

G01C 19/72

US Classification:

356462, 356460

Abstract:

A fiber optic gyroscope including an optical circulator in the path of said first and second beams for providing polarized first and second beams of identical polarization. A phase modulator couples the first and second beams to the first and second end respectively of the fiber loop, and couples for receiving the return first and second beams from the second and first ends respectively of the fiber loop. First and second photodiodes are coupled to the optical circulator for receiving the optical signal from the first and second return beams.

US Patent:

20030107830, Jun 12, 2003

Filed:

Dec 7, 2001

Appl. No.:

10/013116

Inventors:

Bradley Baumgartner - Los Banos CA, US
Shanlin Duan - Fremont CA, US
Yan Liu - Cupertino CA, US
Bob Robinson - Hollister CA, US
Li Tang - Fremont CA, US
Ka Wong - Fremont CA, US

International Classification:

G11B027/36

US Classification:

360/031000

Abstract:

An apparatus and method for detecting and marking delamination defects on thin film disks are disclosed. The apparatus includes a read/write (R/W) head and a burnishing head mounted on separate arms that access the disk while spinning on the test stand. The controller uses the R/W head to perform an initial magnetic test of selected areas on the disk to establish an initial defect map. The burnish head is then flown over the surface for an extended time to accelerate and open up the latent delamination defects by impacting protruding material. The R/W head is then used to perform a second magnetic test which is compared against the first test to identify the delamination defects which have been developed by the burnishing. The delamination defects are then marked with a magnetic pattern which aids in optically locating the defect during subsequent failure analysis.

US Patent:

20130033737, Feb 7, 2013

Filed:

Aug 4, 2011

Appl. No.:

13/198488

Inventors:

Ka Kha Wong - Alhambra CA, US

Assignee:

Emcore Corporation - Albuquerque NM

International Classification:

G02F 1/01
B32B 38/10
B23P 11/00
B32B 37/12

US Classification:

359279, 156 60, 156256, 29428

Abstract:

Methods of attaching an optical line to a phase modulator in a fiber optic gyroscope. The methods include positioning at least one end of the optical line relative to a side of the phase modulator. The end of the optical line may have a first non-perpendicular angle and the side of the phase modulator may have a second non-perpendicular angle. The end of the optical line may be attached to the side of the phase modulator with the end of the optical line being non-parallel to the side of the phase modulator. The optical line may be an optical coil or a light path.

US Patent:

20210045626, Feb 18, 2021

Filed:

Aug 14, 2020

Appl. No.:

16/994245

Inventors:

- Redwood City CA, US
Ka Chun Wong - South San Francisco CA, US

International Classification:

A61B 1/307
A61B 1/005
A61B 1/05
A61B 1/00
A61B 34/30

Abstract:

Certain aspects relate to systems and techniques for an endoscopic system to access, visualize, and treat pathologies in various organs via natural orifices and lumens of various organs. In one aspect, the system includes an elongate shaft configured for insertion into a urinary tract of a patient. The elongate shaft can include a proximal section, a distal section, a tip portion, and a plurality of pull wires extending along the elongate shaft and terminating at the tip portion of the elongate shaft. The plurality of pull wires may include a first and second pull wire. The first pull wire may be configured to articulate each of the proximal section and the distal section in a first direction. The second pull wire may be configured to articulate the distal section in a second direction independently of the proximal section, the second direction being transverse to the first direction.

US Patent:

20200206472, Jul 2, 2020

Filed:

Dec 27, 2019

Appl. No.:

16/728948

Inventors:

- Redwood City CA, US
Binh T. Nguyen - Newark CA, US
Ka Chun Wong - South San Francisco CA, US
Ryan Jeffrey Connolly - San Carlos CA, US
Javier O. Fajardo Vargas - Daly City CA, US
Umberto Scarfogliero - Redwood City CA, US
Zachary Stahl Morrison - Dallas TX, US

International Classification:

A61M 25/06
A61M 3/02
A61M 1/00
A61B 17/22
A61B 1/00
A61B 1/307
A61M 29/02
A61B 5/20
A61B 10/04
A61B 50/13
A61B 34/37
A61G 13/04
A61B 34/20

Abstract:

Certain aspects relate to percutaneous sheaths for medical procedures as well as to related systems and methods. For example, a system for performing a percutaneous assisted medical procedure can include a percutaneous sheath. The percutaneous sheath can include a first conduit for providing aspiration into the kidney and a second conduit for passing a catheter into the kidney. The system can also include an aspiration catheter configured to be inserted into the kidney through the second conduit of the percutaneous sheath. A fluidics system can include an irrigation source comprising a pump and an aspiration source comprising a vacuum. The irrigation source can be connected to a fluid inlet of the percutaneous sheath that is connected to the first conduit. The aspiration source can be connected to the aspiration catheter.

US Patent:

20190175799, Jun 13, 2019

Filed:

Dec 6, 2018

Appl. No.:

16/212199

Inventors:

- Redwood City CA, US
Ka Chun Wong - South San Francisco CA, US
Rachel Leigh Chok - Sunnyvale CA, US
Joshua F. DeFonzo - San Carlos CA, US
Binh T. Nguyen - Newark CA, US
Vivian Thalia Nguyen - Palo Alto CA, US
Rishi Nikhil Purohit - Fremont CA, US

International Classification:

A61M 1/00
A61M 3/02
A61B 17/22
A61B 18/26
A61B 50/13
A61B 1/307
A61B 1/267
A61B 10/02

Abstract:

Methods and systems for administering directed fluidics during a medical procedure for removing an object are disclosed. A method includes inserting first and second medical instruments into a treatment site, providing irrigation and aspiration of the treatment site through the first and second medical instruments, determining a characteristic of one of the irrigation and the aspiration, and selecting a characteristic of the other of the irrigation and aspiration based on the determined characteristic.