Don Young Lee

D517608, Mar 21, 2006

Nov 17, 2004

29/217477

Stephen H. Wolff - New Rochelle NY, US
Don Lee - New Rochelle NY, US

Wolff Medical Marketing and Design, LLC - New Rochelle NY

1902

D19 86

D551348, Sep 18, 2007

Jul 20, 2005

29/234604

Don Lee - New Rochelle NY, US

Wolff Medical Marketing and Design, LLC - New Rochelle NY

2401

D24165, D24134

D566536, Apr 15, 2008

Nov 17, 2004

29/217467

Stephen H. Wolff - New Rochelle NY, US
Don Lee - New Rochelle NY, US

Wolff Medical Marketing and Design, LLC - New York NY

0808

D 8395

D576324, Sep 2, 2008

Mar 19, 2007

29/285035

Stephen H. Wolff - Scarsdale NY, US
Don Lee - New Rochelle NY, US

Wolff Medical Marketing and Design, LLC - New York NY

2602

D26 39

D603706, Nov 10, 2009

Jul 25, 2008

29/310121

Stephen Wolff - New York NY, US
Don Lee - New City NY, US

0901

D 9500

52456544, Sep 14, 1993

Oct 10, 1991

7/775628

Dennis E. Wilkison - San Jose CA
Don N. Lee - San Jose CA

Cermetek Microelectronics, Inc. - Sunnyvale CA

H02H 322

379405

An isolation circuit (20) that is devoid of coupling transformers and yet suitable for use as a telephone line interface. The circuit is characterized by very wide bandwidth, low noise, and high linearity. Opto-isolators couple analog transmit and receive channels in a user device (12) across an isolation barrier (57) to a line pair for full duplex communication on the line pair. The interface circuit, which also includes a hybrid (55), includes first and second oppositely directed linear optocouplers (50,52). The first is disposed between the transmit channel and the hybrid; the second between the receive channel and the hybrid.

53572114, Oct 18, 1994

May 3, 1993

8/056093

Stephen W. Bryson - Cupertino CA
Alan T. Kondo - Cupertino CA
Don N. Lee - San Jose CA

Raytheon Company - Lexington MA

H03F 326

330263

A pin driver amplifier having a complementary pair of transistors with a pair of resistors coupled between the respective emitters. A node between the resistors is coupled through an output series resistor to an output terminal adapted for connection of a transmission line that conducts driver pulses of predetermined voltage levels and timing to a device under test. A capacitor is tied between the emitters to provide a substantially constant reverse termination impedance for the transmission line thereby reducing reflections. Also, an RC network is coupled between the output terminal and ground to further reduce reflections. The amplifier transistors are driven by respective buffer transistor emitters that are tied together by a capacitor to make the positive and negative going drive capabilities for the amplifier transistors more equal. Further, capacitors are coupled between the amplifier collectors and ground to provide a bypass for parasitic inductance in the supply voltage wires.

57814520, Jul 14, 1998

Mar 22, 1995

8/408430

Don Hoon Lee - Stamford CT
Subramania Sudharsanan - Shrewsbury MA

International Business Machines Corporation - Armonk NY

H03M 1300

364572

A method and apparatus for processing a digital data stream digital including a plurality of samples representing an audio signal. The plurality of samples are requantized. The plurality of requantized samples are filtered using a fast Fourier transform, wherein pulse code modulated samples are created from the plurality of requantized samples.