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David Arthur Rich
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Whitehall, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Multistage converter employing digital dither
Patent number
6,404,364
Issue date
Jun 11, 2002
Agere Systems Guardian Corp.
H. Scott Fetterman
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method and apparatus for controlling the common-mode output voltage...
Patent number
5,939,904
Issue date
Aug 17, 1999
Lucent Technologies, Inc.
H. Scott Fetterman
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method of improving the stability of a sigma-delta modulator employ...
Patent number
5,745,061
Issue date
Apr 28, 1998
Lucent Technologies Inc.
Steven Robert Norsworthy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
PTAT current source
Patent number
5,646,518
Issue date
Jul 8, 1997
Lucent Technologies Inc.
Kadaba R. Lakshmikumar
G05 - CONTROLLING REGULATING
Information
Patent Grant
Circuit and method for testing a dithered analog-to-digital converter
Patent number
5,530,442
Issue date
Jun 25, 1996
AT&T Corp.
Steven R. Norsworthy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Adaptive notch filter for FM interference cancellation
Patent number
5,307,517
Issue date
Apr 26, 1994
David A. Rich
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Integrated analog-to-digital converter
Patent number
4,937,577
Issue date
Jun 26, 1990
Microchip Technology Inc.
David Rich
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Integrated analog-to-digital converter
Patent number
4,860,012
Issue date
Aug 22, 1989
Microchip Technology Incorporated
David Rich
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Integrated analog-to-digital converter
Patent number
4,796,004
Issue date
Jan 3, 1989
General Instrument Corp.
David Rich
G06 - COMPUTING CALCULATING COUNTING