Paul J Chang

US Patent:

20020004500, Jan 10, 2002

Filed:

Mar 28, 2001

Appl. No.:

09/819549

Inventors:

Richard Reeves - Pennington NJ, US
Robert Wolf - Newton PA, US
Paul Chang - Doylestown PA, US

International Classification:

A61K031/55

US Classification:

514/212030

Abstract:

Vasopeptidase inhibitors, especially omapatrilat, are useful in treating isolated systolic hypertension. The vasopeptidase inhibitor may be used in combination with other pharmaceutically active agents.

US Patent:

48478326, Jul 11, 1989

Filed:

Oct 21, 1986

Appl. No.:

7/921185

Inventors:

Paul S. Chang - Harrisburg PA
Lee W. Steely - Reinholds PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

H04L 514

US Classification:

370 85

Abstract:

A data transmission system includes an oscillator which generates an ongoing sequence of clock signals, each of which defines a respective time period. Several interface circuits including first and second interface circuits are connected to the oscillator by a clock channel adapted to carry the clock signals from the oscillator to the interface circuits and a data channel adapted to carry data signals between the interface circuits. The first interface circuit places the first data signal on the data channel during the time period corresponding to a preselected one of the clock signals in each set, and the second interface circuit reads the first data signal from the data channel during this preselected time period. In this way, the first data signal is transmitted directly from the first to the second interface circuit via the data channel.

US Patent:

50013742, Mar 19, 1991

Filed:

Sep 8, 1989

Appl. No.:

7/404993

Inventors:

Paul S. Chang - Harrisburg PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

H03K 500
H03B 104

US Classification:

3075421

Abstract:

A digital filter for removing short duration perturbations from a regular train of bilevel pulses on an input line (10) includes a clock (12) for providing a clock signal at a frequency which is an integral multiple of the pulse train frequency. This defines a plurality of subintervals within the interval defined by each of the pulses. The clock signal and the pulse train are applied to a shift register (16, 18) which is coupled to circuitry (24, 28) which examines the level of the signal on the input line (10) during two consecutive subintervals. This circuitry (24, 28) is coupled to output circuitry (32) for providing a clock-synchronized filtered pulse train on an output line (34) which has a data bit length equal to that of the signal on the input line (10) but is delayed by two of the subintervals defined by the clock (12).

US Patent:

44183224, Nov 29, 1983

Filed:

Feb 5, 1982

Appl. No.:

6/345964

Inventors:

Paul S. Chang - Harrisburg PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

H03L 718

US Classification:

331 1A

Abstract:

Electronic switching means for synchronizing a voltage controlled oscillator output with a variable input Baud Rate Clock. A Baud rate counter ratio input to a Phase Lock Loop circuit is selected or electronically switched automatically according to the input signal Baud rate. Binary counters count down a clock during the time an input signal is high, and the result of the count is transferred to an output register which controls, on the basis of the count, the electronic switching of a Baud rate counter to select the appropriate counter ratio output.

US Patent:

49808842, Dec 25, 1990

Filed:

Jan 19, 1990

Appl. No.:

7/467477

Inventors:

Paul S. Chang - Harrisburg PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

H04J 1500

US Classification:

370 9

Abstract:

A pulse duration multiplexing communication system wherein the data pulse durations are defined as a function of the system clock tolerance. This results in no overlapping of data pulse durations for any local clock operating within the tolerance range.

US Patent:

43453236, Aug 17, 1982

Filed:

Jan 7, 1980

Appl. No.:

6/110422

Inventors:

Paul S. Chang - Harrisburg PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

H04J 1500

US Classification:

370 9

Abstract:

Method for multiplexing of digital data is disclosed, to enable simultaneous transmission/reception of a number of digital signals over a single communication channel. A plurality of inputs are clocked in and assigned respective binary coded weights. The combined binary coded decimal value of the inputs determines the time duration of a generated digital pulse. The multiplexed data is thereby represented by the length or duration of the pulse. At the receiving end, the pulse is amplified and quantized to digital level and outputs generated in correspondence to the digital transmitter inputs.

US Patent:

58176586, Oct 6, 1998

Filed:

Jun 24, 1997

Appl. No.:

8/881296

Inventors:

Peter K. S. Siegl - Blue Bell PA
Allan I. Goldberg - North Wales PA
Michael R. Goldberg - Plymouth Meeting PA
Paul I. Chang - Doylestown PA

Assignee:

Merck & Company, Inc. - Rahway NJ

International Classification:

A61K 3155

US Classification:

514221

Abstract:

A method for the treatment of Meniere's disease comprising the administration of a medicament which modulates the IKs channel of the ear and thereby reducing endolymph production.

US Patent:

53530187, Oct 4, 1994

Filed:

Apr 6, 1992

Appl. No.:

7/864454

Inventors:

Keith J. McKechnie - Harrisburg PA
Lee W. Steely - Mohnton PA
Paul S. Chang - Harrisburg PA

Assignee:

The Whitaker Corporation - Wilmington DE

International Classification:

G08C 1916

US Classification:

34082557

Abstract:

A system for defining and controlling data transmissions in a multiplexing system having a host controller in bi-directional communication with a plurality of remote stations or nodes. The system includes a series of simple frame flags generally defined as varying periods of inactivity on the bi-directional transmission line.