David L. Clifton — 5 Patents at Arbitron

David L. Clifton has been granted 5 US patents while listed as an inventor at Arbitron. The first was granted in 1995 and the most recent in April 1997. David L. Clifton ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list David L. Clifton in Boulder, CO, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
5621454	Method and system for recognition of broadcast segments	Michael D. Ellis, Stephen M. Dunn, Michael W. Fellinger, Fancy B. Younglove, David M. James +1 more	1997-04-15
5612729	Method and system for producing a signature characterizing an audio broadcast signal	Michael D. Ellis, Stephen M. Dunn, Michael W. Fellinger, Fancy B. Younglove, David M. James +1 more	1997-03-18
5572246	Method and apparatus for producing a signature characterizing an interval of a video signal while compensating for picture edge shift	Michael D. Ellis, Stephen M. Dunn, Michael W. Fellinger, Fancy B. Younglove, David M. James +1 more	1996-11-05
5504518	Method and system for recognition of broadcast segments	Michael D. Ellis, Stephen M. Dunn, Michael W. Fellinger, Fancy B. Younglove, David M. James +1 more	1996-04-02
5436653	Method and system for recognition of broadcast segments	Michael D. Ellis, Stephen M. Dunn, Michael W. Fellinger, Fancy B. Younglove, David M. James +1 more	1995-07-25

David L. Clifton — 5 Patents

Issued Patents All Time

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