DK

David A. Kiewit

AN A.C. Nielsen: 5 patents #2 of 44Top 5%
NR Nielsen Media Research: 1 patents #13 of 31Top 45%
📍 Palm Harbor, FL: #78 of 650 inventorsTop 15%
🗺 Florida: #6,875 of 67,251 inventorsTop 15%
Overall (All Time): #667,704 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5737025 Co-channel transmission of program signals and ancillary signals Robert Dougherty, Daozheng Lu, Henry B. Wheeler 1998-04-07
5662345 Wheelchair wheel cambering apparatus 1997-09-02
5331544 Market research method and system for collecting retail store and shopper market research data Daozheng Lu, Jia Zhang 1994-07-19
5040409 Sprinkler alarm 1991-08-20
4930011 Method and apparatus for identifying individual members of a marketing and viewing audience 1990-05-29
4876736 Method and apparatus for determining channel reception of a receiver 1989-10-24
4697209 Methods and apparatus for automatically identifying programs viewed or recorded Daozheng Lu 1987-09-29
4644509 Ultrasonic audience measurement system and method Daozheng Lu 1987-02-17