Thanh Duc Le

US Patent:

6530653, Mar 11, 2003

Filed:

Jul 25, 2001

Appl. No.:

09/916186

Inventors:

Hue P. Le - Beaverton OR
Hoi P. Le - Beaverton OR
Thanh P. Le - Beaverton OR
Linh B. Tran - Aloha OR

Assignee:

PicoJet, Inc. - Hillsboro OR

International Classification:

B41J 216

US Classification:

347 71

Abstract:

A piezoelectric ceramic ink-jet print head is made by ultrasonic bonding processes. Several improved features of ink jet print heads include more cost-effective bonding processes using an ultrasonic bonding technique, an improved piezoelectric ceramic structural element pattern, and improved print head piezoelectric electrical contacts. There is also disclosed an ultrasonic bonding process for joining ceramic and metallic objects.

US Patent:

6783213, Aug 31, 2004

Filed:

Oct 15, 2002

Appl. No.:

10/272519

Inventors:

Hue P. Le - Beaverton OR
Hoi P. Le - Beaverton OR
Thanh P. Le - Beaverton OR
Linh B. Tran - Aloha OR

Assignee:

PicoJet, Inc. - Hillsboro OR

International Classification:

B41J 2045

US Classification:

347 71

Abstract:

There is disclosed a piezoelectric ceramic ink-jet print head and made by an inventive ultrasonic bonding process. Specifically, there are disclosed several improved features of ink jet print heads, including a more cost-effective bonding process using an ultrasonic bonding technique, an improved piezoelectric ceramic crystal pattern, and improved print head-piezoelectric electrical contacts. Further, there is disclosed an ultrasonic bonding process joining metallic objects with ultrasonic energy.

US Patent:

6928731, Aug 16, 2005

Filed:

May 21, 2004

Appl. No.:

10/851309

Inventors:

Hue P. Le - Beaverton OR, US
Hoi P. Le - Beaverton OR, US
Thanh P. Le - Beaverton OR, US
Linh B. Tran - Aloha OR, US

Assignee:

Picojet, Inc. - Hillsboro OR

International Classification:

B21D053/76
B23K001/06

US Classification:

298901, 29 2535, 29843, 29840, 2281101

Abstract:

A piezoelectric ceramic ink-jet print head is made by an inventive ultrasonic bonding process. Specifically, there are several improved features of ink jet print heads, including a more cost-effective bonding process using an ultrasonic bonding technique, an improved piezoelectric ceramic crystal pattern, and improved print head-piezoelectric electrical contacts. Further, there is an ultrasonic bonding process joining metallic objects with ultrasonic energy.

US Patent:

8167932, May 1, 2012

Filed:

Oct 18, 2005

Appl. No.:

11/252657

Inventors:

Henry Bourang - Irvine CA, US
Thanh Huy Le - Oceanside CA, US
David M. Taylor - Lake Forest CA, US
Sam Sok - Santa Ana CA, US
Mario Iobbi - Agoura Hills CA, US
Rajesh Khanna - Tustin CA, US
Dave J. Evans - Irvine CA, US

Assignee:

Edwards Lifesciences Corporation - Irvine CA

International Classification:

A61F 2/24
A61F 2/06

US Classification:

623 211, 623 111

Abstract:

A heart valve delivery system is provided wherein a prosthetic valve is carried on a valve catheter inside a delivery sleeve. A step balloon protrudes from the delivery sleeve and provides a tapered surface for facilitating advancement through a body vessel. The step balloon also aids in crossing the leaflets of a native valve. After the prosthetic valve is positioned within the native valve, the delivery sleeve is retracted to expose the prosthetic valve. In one embodiment, the delivery sleeve is retracted by the use of a lead screw, which effectuates relative movement between the valve catheter and delivery sleeve. The prosthetic valve is preferably self-expandable. If necessary, the step balloon may be expanded to securely seat the prosthetic valve at the site of the native valve. The prosthetic valve is preferably coupled to the valve catheter by a plurality of flexible extension arms which allow the prosthetic valve to be collapsed after initial deployment such that the prosthetic valve may be repositioned if necessary.

US Patent:

20060050109, Mar 9, 2006

Filed:

Aug 16, 2005

Appl. No.:

11/205755

Inventors:

Hue Le - Beaverton OR, US
Hoi Le - Beaverton OR, US
David Elder - Tualatin OR, US
Thanh Le - Beaverton OR, US

International Classification:

B41J 2/16
B41J 2/045

US Classification:

347047000, 347070000, 347071000, 310328000

Abstract:

A piezoelectric ceramic inkjet print head is made by an ultrasonic bonding process. Specifically, there are disclosed several improved features of ink jet print heads, including a more cost-effective bonding process using an ultrasonic bonding technique, an improved piezoelectric ceramic crystal pattern, and improved print head-piezoelectric electrical contacts. Further, there is disclosed an ultrasonic bonding process joining metallic objects with ultrasonic energy.

US Patent:

20090281619, Nov 12, 2009

Filed:

Oct 8, 2008

Appl. No.:

12/247846

Inventors:

Thanh H. Le - Oceanside CA, US
Tri Tran - Fountain Valley CA, US
Ronaldo Cayabyab - Mission Viejo CA, US
David Taylor - Lake Forest CA, US
Antonio Vidal - Tustin CA, US
Robert Bowes - Laguna Hills CA, US

Assignee:

Edwards Lifesciences Corporation - Irvine CA

International Classification:

A61F 2/24

US Classification:

623 211

Abstract:

A heart valve delivery apparatus includes a valve carrying member. A prosthetic valve is crimped onto the valve carrying member at a location that is distal or proximal to the balloon member, thereby providing a smaller profile delivery apparatus.

US Patent:

20120209375, Aug 16, 2012

Filed:

Feb 9, 2012

Appl. No.:

13/370215

Inventors:

Gilbert Madrid - Dana Point CA, US
Matthew T. Winston - Ladera Ranch CA, US
Sam Sok - Santa Ana CA, US
Thanh Huy Le - Oceanside CA, US
Tri D. Tran - Fountain Valley CA, US
Kim Le - Carlsbad CA, US

International Classification:

A61M 25/092
A61F 2/24

US Classification:

623 211, 604 9504

Abstract:

A delivery system for stabilizing a catheter shaft across an aortic arch can include one or more stabilizing members configured to fix or stabilize the position of the catheter relative to the aortic arch of a patient.

US Patent:

20120290078, Nov 15, 2012

Filed:

Apr 17, 2012

Appl. No.:

13/449200

Inventors:

Henry Bourang - Irvine CA, US
Thanh Huy Le - Oceanside CA, US
David M. Taylor - Lake Forest CA, US
Sam Sok - Santa Ana CA, US
Mario Iobbi - Agoura Hills CA, US
Rajesh Khanna - Morrisdale CA, US
Dave J. Evans - Irvine CA, US

Assignee:

EDWARDS LIFESCIENCES CORPORATION - Irvine CA

International Classification:

A61F 2/24

US Classification:

623 211

Abstract:

A heart valve delivery system is provided wherein a prosthetic valve is carried on a valve catheter inside a tubular delivery sleeve. The valve catheter has a distal end coupled to a mop. The mop comprises a plurality of flexible extensions configured for releasable attachment to the prosthetic valve. A lead screw nut is coupled to a proximal end of the tubular delivery sleeve and a lead screw is coupled to the valve catheter. The lead screw engages the lead screw nut and rotation of the lead screw causes the delivery sleeve to retract relative to the valve catheter and the prosthetic valve for exposing the prosthetic valve. The flexible extensions of the mop allow expansion of the valve while maintaining the attachment during placement of the valve at a native valve site.