Charles R. Hoffman

Person

Raleigh, NC, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and system for fast ethernet serial port multiplexing to red...
- Patent number 6,980,563
- Issue date Dec 27, 2005
- International Business Machines Corporation
- Kenneth James Barker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
CMOS on-chip precision voltage reference scheme
- Patent number 6,288,602
- Issue date Sep 11, 2001
- International Business Machines Corporation
- Charles R. Hoffman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Single-port network node transceiver with powered-down protection
- Patent number 5,490,171
- Issue date Feb 6, 1996
- International Business Machines Corporation
- Phillip R. Epley
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Reliable clock source having a plurality of redundant oscillators
- Patent number 5,416,443
- Issue date May 16, 1995
- International Business Machines Corporation
- H. Clay Cranford
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Substrate noise coupling reduction for VLSI applications with mixed...
- Patent number 5,317,183
- Issue date May 31, 1994
- International Business Machines Corporation
- Charles R. Hoffman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Adaptive equalization and regeneration system
- Patent number 5,293,405
- Issue date Mar 8, 1994
- International Business Machines Corp.
- John E. Gersbach
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sinusoidal signal generator
- Patent number 5,109,166
- Issue date Apr 28, 1992
- International Business Machines Corporation
- Ronald L. Coburn
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current transient reduction for VLSI chips
- Patent number 5,073,730
- Issue date Dec 17, 1991
- International Business Machines Corporation
- Charles R. Hoffman
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
CMOS signal threshold detector
- Patent number 4,926,442
- Issue date May 15, 1990
- International Business Machines Corporation
- Eugene R. Bukowski
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
CMOS precision gain amplifier
- Patent number 4,841,254
- Issue date Jun 20, 1989
- International Business Machines Corp.
- Eugene R. Bukowski
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
CMOS reference voltage generation
- Patent number 4,837,459
- Issue date Jun 6, 1989
- International Business Machines Corp.
- Eugene R. Bukowski
- G05 - CONTROLLING REGULATING
Information Patent Grant
Bias scheme for achieving voltage independent capacitance
- Patent number 4,786,828
- Issue date Nov 22, 1988
- Charles R. Hoffman
- G05 - CONTROLLING REGULATING
Information Patent Grant
CMOS Precision voltage reference generator
- Patent number 4,742,292
- Issue date May 3, 1988
- International Business Machines Corp.
- Charles R. Hoffman
- G05 - CONTROLLING REGULATING
Information Patent Grant
Electrically alterable read-only storage cell and method of operati...
- Patent number 4,486,859
- Issue date Dec 4, 1984
- International Business Machines Corporation
- Charles R. Hoffman
- G11 - INFORMATION STORAGE
Information Patent Grant
On chip charge trap compensated high voltage converter
- Patent number 4,481,566
- Issue date Nov 6, 1984
- International Business Machines Corporation
- Charles R. Hoffman
- G11 - INFORMATION STORAGE
Information Patent Grant
Sense amplifier for MOS static memory array
- Patent number 4,460,985
- Issue date Jul 17, 1984
- International Business Machines Corporation
- Charles R. Hoffman
- G11 - INFORMATION STORAGE
Information Patent Grant
Dynamic RAM with non-volatile back-up storage and method of operati...
- Patent number 4,449,205
- Issue date May 15, 1984
- International Business Machines Corp.
- Charles R. Hoffman
- G11 - INFORMATION STORAGE
Information Patent Grant
High voltage on chip FET driver
- Patent number 4,429,237
- Issue date Jan 31, 1984
- International Business Machines Corp.
- Hayden C. Cranford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Static RAM with non-volatile back-up storage and method of operatio...
- Patent number 4,420,821
- Issue date Dec 13, 1983
- International Business Machines Corporation
- Charles R. Hoffman
- G11 - INFORMATION STORAGE
Information Patent Grant
Electrically alterable read only memory cell
- Patent number 4,404,577
- Issue date Sep 13, 1983
- International Business Machines Corp.
- Hayden C. Cranford
- G11 - INFORMATION STORAGE
Information Patent Grant
Reversible electrically variable active parameter trimming apparatu...
- Patent number 4,245,165
- Issue date Jan 13, 1981
- International Business Machines Corporation
- Charles R. Hoffman
- G05 - CONTROLLING REGULATING
Information Patent Grant
Receive/bypass circuit for subsystems in polling system
- Patent number 4,224,684
- Issue date Sep 23, 1980
- International Business Machines Corporation
- David E. Conner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Bi-polar amplifier with sharply defined amplitude limits
- Patent number 4,095,126
- Issue date Jun 13, 1978
- International Business Machines Corporation
- Charles Reeves Hoffman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Integrated circuit amplifier
- Patent number 4,059,811
- Issue date Nov 22, 1977
- International Business Machines Corporation
- Charles Reeves Hoffman
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Compensating current source
- Patent number 4,004,164
- Issue date Jan 18, 1977
- International Business Machines Corporation
- Hayden Clavie Cranford
- G05 - CONTROLLING REGULATING
Information Patent Grant
Differential amplifier with constant gain
- Patent number 3,970,951
- Issue date Jul 20, 1976
- International Business Machines Corporation
- Charles Reeves Hoffman
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Method and system for fast Ethernet serial port multiplexing to red...
- Publication number 20060029095
- Publication date Feb 9, 2006
- International Business Machines Corporation
- Kenneth James Barker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Power conservation in communication systems
- Publication number 20020157030
- Publication date Oct 24, 2002
- International Business Machines Corporation
- Kenneth James Barker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for fast ethernet serial port multiplexing to red...
- Publication number 20010050921
- Publication date Dec 13, 2001
- International Business Machines Corporation
- Kenneth James Barker
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Charles R. Hoffman

Person

Patents Grantslast 30 patents

Method and system for fast ethernet serial port multiplexing to red...

CMOS on-chip precision voltage reference scheme

Single-port network node transceiver with powered-down protection

Reliable clock source having a plurality of redundant oscillators

Substrate noise coupling reduction for VLSI applications with mixed...

Adaptive equalization and regeneration system

Sinusoidal signal generator

Current transient reduction for VLSI chips

CMOS signal threshold detector

CMOS precision gain amplifier

CMOS reference voltage generation

Bias scheme for achieving voltage independent capacitance

CMOS Precision voltage reference generator

Electrically alterable read-only storage cell and method of operati...

On chip charge trap compensated high voltage converter

Sense amplifier for MOS static memory array

Dynamic RAM with non-volatile back-up storage and method of operati...

High voltage on chip FET driver

Static RAM with non-volatile back-up storage and method of operatio...

Electrically alterable read only memory cell

Reversible electrically variable active parameter trimming apparatu...

Receive/bypass circuit for subsystems in polling system

Bi-polar amplifier with sharply defined amplitude limits

Integrated circuit amplifier

Compensating current source

Differential amplifier with constant gain

Patents Applicationslast 30 patents

Method and system for fast Ethernet serial port multiplexing to red...

Power conservation in communication systems

Method and system for fast ethernet serial port multiplexing to red...