David A. Kiewit

Person

Palm Harbor, FL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Co-channel transmission of program signals and ancillary signals
- Patent number 5,737,025
- Issue date Apr 7, 1998
- Nielsen Media Research, Inc.
- Robert A. Dougherty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Market research method and system for collecting retail store and s...
- Patent number 5,331,544
- Issue date Jul 19, 1994
- A. C. Nielsen Company
- Daozheng Lu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Sprinkler alarm
- Patent number 5,040,409
- Issue date Aug 20, 1991
- David A. Kiewit
- G08 - SIGNALLING
Information Patent Grant
Method and apparatus for identifying individual members of a market...
- Patent number 4,930,011
- Issue date May 29, 1990
- A. C. Nielsen Company
- David A. Kiewit
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for determining channel reception of a receiver
- Patent number 4,876,736
- Issue date Oct 24, 1989
- A. C. Nielsen Company
- David A. Kiewit
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods and apparatus for automatically identifying programs viewed...
- Patent number 4,697,209
- Issue date Sep 29, 1987
- A. C. Nielsen Company
- David A. Kiewit
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Ultrasonic audience measurement system and method
- Patent number 4,644,509
- Issue date Feb 17, 1987
- A. C. Nielsen Company
- David A. Kiewit
- G01 - MEASURING TESTING

David A. Kiewit

Person

Patents Grantslast 30 patents

Co-channel transmission of program signals and ancillary signals

Market research method and system for collecting retail store and s...

Sprinkler alarm

Method and apparatus for identifying individual members of a market...

Method and apparatus for determining channel reception of a receiver

Methods and apparatus for automatically identifying programs viewed...

Ultrasonic audience measurement system and method