David L Leung

US Patent:

6980020, Dec 27, 2005

Filed:

Dec 19, 2003

Appl. No.:

10/741172

Inventors:

Scott C. Best - Palo Alto CA, US
Anthony Koon Wong - Daly City CA, US
David Leung - Cupertino CA, US

Assignee:

Rambus Inc. - Los Altos CA

International Classification:

H03K019/003
H03K017/16

US Classification:

326 30, 326 86, 327108

Abstract:

Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a transmitter die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains the termination resistances for the signal transmission lines. The ODT control system derives a number of calibration currents from precision voltage and resistance references and distributes the reference currents to a number of transmitters. Each transmitter then derives an ODT calibration signal using the respective reference current and another precision resistor, and then employs the calibration signal to calibrate local termination elements. Distributing calibrated currents provides excellent noise immunity, while limiting the requisite number of external voltage references reduces cost.

US Patent:

7300791, Nov 27, 2007

Filed:

May 17, 2002

Appl. No.:

10/150046

Inventors:

Napoleone Ferrara - San Francisco CA, US
David Wai-Hung Leung - Mercer Island WA, US

Assignee:

Genentech, Inc. - South San Francisco CA

International Classification:

C12N 5/00
C12N 15/00
C12N 15/12
C12N 15/18
C12Q 1/68

US Classification:

435325, 536 235, 435 6, 4353201, 4352523

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.

US Patent:

7408378, Aug 5, 2008

Filed:

Nov 23, 2005

Appl. No.:

11/286229

Inventors:

Scott C. Best - Palo Alto CA, US
Anthony Koon Wong - Daly City CA, US
David Leung - Cupertino CA, US

Assignee:

Rambus Inc. - Los Altos CA

International Classification:

H03K 17/16

US Classification:

326 30, 326 87

Abstract:

Described are on-die termination (ODT) systems and methods that facilitate high-speed communication between a transmitter die and a receiver die interconnected via one or more signal transmission lines. An ODT control system in accordance with one embodiment calibrates and maintains the termination resistances for the signal transmission lines. The ODT control system derives a number of calibration currents from precision voltage and resistance references and distributes the reference currents to a number of transmitters. Each transmitter then derives an ODT calibration signal using the respective reference current and another precision resistor, and then employs the calibration signal to calibrate local termination elements. Distributing calibrated currents provides excellent noise immunity, while limiting the requisite number of external voltage references reduces cost.

US Patent:

20030092617, May 15, 2003

Filed:

Jun 10, 2002

Appl. No.:

10/166941

Inventors:

Napoleone Ferrara - San Francisco CA, US
David Leung - Seattle WA, US

Assignee:

Genentech, Inc.

International Classification:

A61K038/18

US Classification:

514/012000

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.

US Patent:

20030108989, Jun 12, 2003

Filed:

Jun 20, 2002

Appl. No.:

10/177485

Inventors:

Napoleone Ferrara - San Francisco CA, US
David Leung - Seattle WA, US

Assignee:

Genentech, Inc.

International Classification:

C07K014/475
C12P021/02
C07H021/04

US Classification:

435/069100, 435/320100, 435/325000, 530/399000, 536/023500

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.

US Patent:

20030114374, Jun 19, 2003

Filed:

May 24, 2002

Appl. No.:

10/155492

Inventors:

Napoleone Ferrara - Belvedere CA, US
David Leung - Foster City CA, US

Assignee:

GENENTECH, INC.

International Classification:

A61K038/18
C12Q001/68
C12P021/02
C07H021/04
C12N005/06
C07K014/515

US Classification:

514/012000, 435/006000, 435/069400, 435/320100, 435/325000, 530/399000, 536/023500

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.

US Patent:

20070161558, Jul 12, 2007

Filed:

Sep 27, 2006

Appl. No.:

11/535976

Inventors:

Napoleone Ferrara - San Francisco CA, US
David Leung - Mercer Island WA, US

Assignee:

Genentech, Inc. - South San Francisco CA

International Classification:

A61K 38/18
C07K 14/475
C07H 21/04
C12P 21/06

US Classification:

514012000, 435069100, 435320100, 435325000, 530399000, 536023500

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.

US Patent:

20070238642, Oct 11, 2007

Filed:

Sep 22, 2006

Appl. No.:

11/534619

Inventors:

Napoleone Ferrara - San Francisco CA, US
David Leung - Mercer Island WA, US

Assignee:

Genentech, Inc. - South San Francisco CA

International Classification:

A61K 38/00
C07H 21/04
C12N 15/00
C12N 5/06
C12P 1/04

US Classification:

514002000, 435243000, 435320100, 435325000, 435069100, 530350000, 536023500

Abstract:

DNA isolates coding for a vascular endothelial cell growth factor may be used to produce the protein via recombinant expression systems. Such protein is useful therapeutically to treat conditions in which a selective action on the vascular endothelial cells, in the absence of excessive connective tissue proliferation, is desirable.