Syed Munawer Ahmed

US Patent:

8119563, Feb 21, 2012

Filed:

Oct 4, 2004

Appl. No.:

10/595298

Inventors:

George Theodoridis - Princeton NJ, US
David Rosen - Kendall Park NJ, US
Shunxiang Zhang - Plainsboro NJ, US
Walter H. Yeager - Yardley PA, US
Syed Z. Ahmed - Pennington NJ, US
Hongbin Men - Edison NJ, US
Stephen Donovan - Revere PA, US

Assignee:

FMC Corporation - Philadelphia PA

International Classification:

A01N 43/22
C07D 211/06

US Classification:

504130, 514318, 514327, 546194, 546216

Abstract:

N-substituted azacycle derivative compounds represented by formula (I):.

US Patent:

20130034573, Feb 7, 2013

Filed:

Dec 8, 2010

Appl. No.:

13/517394

Inventors:

Syed Saleem Ahmed - Chesterfield MO, US
Lavinia Marina Lewis - Chesterfield MO, US
Brandi Rae Osborne - Chesterfield MO, US
Sandipan Sinha - Manchester MO, US
Jennifer Marie Thorn - Chesterfield MO, US
Ferhana Zaman - Chesterfield MO, US

Assignee:

CELLDEX THERAPEUTICS, INC. - Needham MA

International Classification:

A61K 39/385
A61P 35/00
A61P 37/04
C07K 1/107
C07K 17/06

US Classification:

4241851, 4241931, 4241941, 530395

Abstract:

The present disclosure relates to vaccine compositions, particularly KLH-peptide conjugates, and methods of making such compositions. The present disclosure further relates to methods of reducing abnormal cell growth using the composistions described herein.

US Patent:

46441980, Feb 17, 1987

Filed:

Oct 31, 1984

Appl. No.:

6/666860

Inventors:

Syed M. Ahmed - Hillsborough NJ

Assignee:

RCA Corporation - Princeton NJ

International Classification:

H03K 508

US Classification:

307549

Abstract:

A semiconductor junction clamps a signal to a reference potential. A comparator senses the difference between the reference potential and the signal potential and causes a controllable bias current supply to selectively apply a forward bias to the junction when the signal is of a polarity sense tending to forward bias the junction.

US Patent:

48900680, Dec 26, 1989

Filed:

Dec 13, 1988

Appl. No.:

7/283674

Inventors:

Syed M. Ahmed - Flemington NJ

Assignee:

Siemens Aktiengesellschaft - Berlin and Munich

International Classification:

H03F 345

US Classification:

330253

Abstract:

An amplifier includes a first pair of FETS arranged in a differential amplifier configuration having their drain-source paths connected between a first constant current source and a point of operating potential. A second pair of FETS has gate electrodes coupled together for receiving an input signal, source electrodes coupled together to a second constant current source, and drain electrodes connected to sources of third and fourth FETS, respectively. The gate electrodes of the fourth FET and the first FET in the first pair are connected to the sources of the third and fourth FETS, respectively, the latter connection forming an output junction. A third pair of FETS has gate electrodes coupled together for receiving the input signal, source electrodes coupled together to the source electrodes of the second pair to form another differential amplifier configuration, and drain electrodes coupled to the source electrodes of fifth and sixth FETs, respectively. The sixth FET has its source electrode coupled to the gate electrode of the second FET in the first pair, and its gate electrode coupled to the source electrode of the fifth FET. The drain electrodes of the third, fourth, fifth and sixth FETS are coupled to the point of operating potential.

US Patent:

48960616, Jan 23, 1990

Filed:

Dec 13, 1988

Appl. No.:

7/283679

Inventors:

Syed M. Ahmed - Flemington NJ

Assignee:

Siemens Aktiengesellschaft - Berlin and Munich

International Classification:

H03K 17687
H03K 3353

US Classification:

307575

Abstract:

Improved series and shunt switching cells for selectively switching an RF input signal to an output over a wide range of frequencies and in a linear manner. The series cell includes an input FET which has the source electrode clamped by means of a diode clamping circuit. The diode clamping circuit is in series with a second FET which has applied to the gate electrode a control voltage. A third FET has its source electrode connected to the source electrode of the second FET and has the drain electrode coupled through a diode to the drain electrode of the second FET. The drain electrode of the third FET is coupled to the gate electrode of a fourth FET where the source electrode of the fourth FET controls a series switching FET to enable the input signal to be switched to the output. The series switching FET has its source to drain path in series with a gate electrode of a fifth FET with the source electrode of the fifth FET coupled through a resistor to the drain electrode of the second FET and to the drain electrode of a sixth FET with the sixth FET having its source electrode coupled to the source electrodes of the second and third FETs and the gate electrode for receiving a control signal of opposite polarity to the control signal applied to the gate electrode of the second FET. The switch is a series cell which provides linear switching of the input signal to an output over a wide range of frequencies.

US Patent:

54534216, Sep 26, 1995

Filed:

Aug 12, 1993

Appl. No.:

8/103053

Inventors:

Karnail S. Atwal - Newtown PA
Syed Z. Ahmed - Pennington NJ
Dinos P. Santafianos - Maplewood NJ

Assignee:

E. R. Squibb & Sons, Inc. - Princeton NJ

International Classification:

A61K 3135
A61K 31665
C07D31168
C07F 9655

US Classification:

514100

Abstract:

Novel compounds useful, for example, for the treatment of ischemic conditions and arrhythmia are disclosed. The compounds have the formula ##STR1## wherein X is oxygen or sulfur and the R groups are as defined herein.