Dennis L. Welty

Person

Mesa, AZ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Circuit and method of signal frequency conversion
- Patent number 6,263,199
- Issue date Jul 17, 2001
- Motorola, Inc.
- Klaas Wortel
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
RF mixer circuit and method of operation
- Patent number 6,104,227
- Issue date Aug 15, 2000
- Motorola, Inc.
- Jeffery C. Durec
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Subscriber line interface circuit for controlling AC and DC output...
- Patent number 5,329,585
- Issue date Jul 12, 1994
- Motorola, Inc.
- David M. Susak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transient protection circuit using common drain field effect transi...
- Patent number 5,198,957
- Issue date Mar 30, 1993
- Motorola, Inc.
- Dennis L. Welty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Alpha enhancement of a transistor using base current feedback to th...
- Patent number 4,994,758
- Issue date Feb 19, 1991
- Motorola, Inc.
- Dennis L. Welty
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Speakerphone with fast idle mode
- Patent number 4,724,540
- Issue date Feb 9, 1988
- Motorola, Inc.
- W. David Pace
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control circuit having a direct current control loop for controllin...
- Patent number 4,720,856
- Issue date Jan 19, 1988
- Motorola, Inc.
- W. David Pace
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control circuit for use with electronic attenuators and method for...
- Patent number 4,689,506
- Issue date Aug 25, 1987
- Motorola, Inc.
- W. David Pace
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Flip-flop having divide inhibit circuitry to change divide ratio
- Patent number 4,648,103
- Issue date Mar 3, 1987
- Motorola, Inc.
- Dennis L. Welty
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Ring sense telephone tone ringer circuit
- Patent number 4,599,494
- Issue date Jul 8, 1986
- Motorola, Inc.
- Dennis L. Welty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bias circuit which is independent of output device voltage characte...
- Patent number 4,491,804
- Issue date Jan 1, 1985
- Motorola, Inc.
- W. Eric Main
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current limiter circuit
- Patent number 4,485,341
- Issue date Nov 27, 1984
- Motorola, Inc.
- Dennis L. Welty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Balanced current multiplier circuit for a subscriber loop interface...
- Patent number 4,431,874
- Issue date Feb 14, 1984
- Motorola, Inc.
- Don W. Zobel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Dennis L. Welty

Person

Patents Grantslast 30 patents

Circuit and method of signal frequency conversion

RF mixer circuit and method of operation

Subscriber line interface circuit for controlling AC and DC output...

Transient protection circuit using common drain field effect transi...

Alpha enhancement of a transistor using base current feedback to th...

Speakerphone with fast idle mode

Control circuit having a direct current control loop for controllin...

Control circuit for use with electronic attenuators and method for...

Flip-flop having divide inhibit circuitry to change divide ratio

Ring sense telephone tone ringer circuit

Bias circuit which is independent of output device voltage characte...

Current limiter circuit

Balanced current multiplier circuit for a subscriber loop interface...