Stephen H. Kelley

Person

Austin, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for implementing a cost efficient voice/data c...
- Patent number 4,689,788
- Issue date Aug 25, 1987
- Motorola, Inc.
- Henry Wurzburg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Monotonic A/D converter which minimizes circuitry for high order bi...
- Patent number 4,618,852
- Issue date Oct 21, 1986
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Switched capacitor precision difference amplifier
- Patent number 4,604,584
- Issue date Aug 5, 1986
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
High speed limited distance multiplexed data communications modem u...
- Patent number 4,594,707
- Issue date Jun 10, 1986
- Motorola, Inc.
- John W. Merritt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Simultaneous voice and asynchronous data telephone
- Patent number 4,593,389
- Issue date Jun 3, 1986
- Henry Wurzburg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital loop transceiver having a power up/down circuit
- Patent number 4,484,028
- Issue date Nov 20, 1984
- Motorola, Inc.
- Stephen H. Kelley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit for interfacing with both TTL and CMOS voltage levels
- Patent number 4,472,647
- Issue date Sep 18, 1984
- Motorola, Inc.
- Robert N. Allgood
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital loop transceiver for interfacing a digital PABX to a digita...
- Patent number 4,432,089
- Issue date Feb 14, 1984
- Motorola, Inc.
- Henry Wurzburg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Precision gain AC coupled operational amplifier
- Patent number 4,387,345
- Issue date Jun 7, 1983
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Capacitive DAC to filter interface circuit
- Patent number 4,384,276
- Issue date May 17, 1983
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital to analog converter
- Patent number 4,384,277
- Issue date May 17, 1983
- Motorola, Inc.
- Robert N. Allgood
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multiple function operational amplifier circuit
- Patent number 4,370,632
- Issue date Jan 25, 1983
- Motorola, Inc.
- Robert N. Allgood
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Auto-zeroing operational amplifier circuit
- Patent number 4,355,285
- Issue date Oct 19, 1982
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
(Sin X)/X correction circuit for a sampled data system
- Patent number 4,320,519
- Issue date Mar 16, 1982
- Motorola, Inc.
- Stephen H. Kelley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Programmable A-law and .mu.-law DAC
- Patent number 4,311,988
- Issue date Jan 19, 1982
- Motorola Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Hybrid circuit
- Patent number 4,300,023
- Issue date Nov 10, 1981
- Motorola, Inc.
- Stephen H. Kelley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Closed loop companding ratio control for continuously variable slop...
- Patent number 4,151,517
- Issue date Apr 24, 1979
- Motorola, Inc.
- Stephen H. Kelley
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
System and method for data encryption
- Publication number 20020021804
- Publication date Feb 21, 2002
- Robert C. Ledzius
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Stephen H. Kelley

Person

Patents Grantslast 30 patents

Method and apparatus for implementing a cost efficient voice/data c...

Monotonic A/D converter which minimizes circuitry for high order bi...

Switched capacitor precision difference amplifier

High speed limited distance multiplexed data communications modem u...

Simultaneous voice and asynchronous data telephone

Digital loop transceiver having a power up/down circuit

Circuit for interfacing with both TTL and CMOS voltage levels

Digital loop transceiver for interfacing a digital PABX to a digita...

Precision gain AC coupled operational amplifier

Capacitive DAC to filter interface circuit

Digital to analog converter

Multiple function operational amplifier circuit

Auto-zeroing operational amplifier circuit

(Sin X)/X correction circuit for a sampled data system

Programmable A-law and .mu.-law DAC

Hybrid circuit

Closed loop companding ratio control for continuously variable slop...

Patents Applicationslast 30 patents

System and method for data encryption