P

Inventor

WELSH RUSSELL J

CA9 patents
⚠️ This page may combine multiple inventors who share the name “WELSH RUSSELL J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CTBA ASSOCIATES

3 patents
US4566030AJan 21, 1986

Television viewer data collection system

CTBA ASSOCIATES526 citations98
US4658290AApr 14, 1987

Television and market research data collection system and method

CTBA ASSOCIATES401 citations97
US4546382AOct 8, 1985

Television and market research data collection system and method

CTBA ASSOCIATES529 citations97

CONTROL DATA CORP

2 patents
US4816904AMar 28, 1989

Television and market research data collection system and method

CONTROL DATA CORP722 citations98
US4958371ASep 18, 1990

Method and apparatus for determining when a telephone handset is off-hook

CONTROL DATA CORP72 citations93

PEAC MEDIA RESEARCH INC

2 patents
US4857999AAug 15, 1989

Video monitoring system

PEAC MEDIA RESEARCH INC445 citations97
US4829558AMay 9, 1989

System and device for data transmission, and related method

PEAC MEDIA RESEARCH INC251 citations97

PEACH MEDIA RESEARCH INC

1 patent
US5374951ADec 20, 1994

Method and system for monitoring television viewing

PEACH MEDIA RESEARCH INC564 citations96

VIEWFACTS INC

1 patent
US4955070ASep 4, 1990

Apparatus and method for automatically monitoring broadcast band listening habits

VIEWFACTS INC214 citations95