Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David E. Townsend — 16 Patents

ILIdexx Laboratories: 7 patents #25 of 240Top 15%
BSBiocontrol Systems: 6 patents #4 of 53Top 8%
RTR.J. Reynolds Tobacco: 3 patents #216 of 746Top 30%
Winston-Salem, NC: #86 of 1,346 inventorsTop 7%
North Carolina: #3,044 of 45,564 inventorsTop 7%
Overall (All Time): #284,196 of 4,157,543Top 7%
16 Patents All Time
David E. Townsend has been granted 16 US patents while listed as an inventor at Idexx Laboratories. The first was granted in 1986 and the most recent in August 2010. David E. Townsend ranks #284,196 of 4,157,543 US inventors in our database (top 6.8%). Patent records list David E. Townsend in Winston-Salem, NC, US.

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7781185 Apparatus and method for testing liquid samples Ross Goldman, Kenneth E. Smith, Kathleen McCarthy 2010-08-24 $9,210,000
7560246 Compositions and methods for detecting target microorganisms in a sample 2009-07-14
7297531 Apparatus and method for testing liquid samples Ross Goldman, Kenneth E. Smith, Kathleen McCarthy 2007-11-20 $9,178,000
7122338 Method for quantification of biological material in a sample Andrew J. Crouteau, Mark W. Pierson, Ali Naqui 2006-10-17
6509168 Method for quantification of biological material in a sample Andrew J. Croteau, Mark W. Pierson, Ali Naqui 2003-01-21
6472167 Method and composition for detecting bacterial contamination in food products Chun-Ming Chen 2002-10-29
6387650 Method and composition for detecting bacterial contamination in food products Chun-Ming Chen 2002-05-14
6287797 Method for quantification of biological material in a sample Andrew J. Croteau, Mark W. Pierson, Ali Naqui 2001-09-11
6268209 Device and method for determination of analyte in a solution Mark W. Pierson, Paul J. Gelardi 2001-07-31 $10,211,000
6190878 Device and methods for determination of analyte in a solution Mark W. Pierson 2001-02-20 $12,005,000
5985594 Method for quantification of biological material in a sample Andrew J. Croteau, Mark W. Pierson, Ali Naqui 1999-11-16 $8,939,000
5700655 Method for quantification of biological material in a sample Andrew J. Croteau, Mark W. Pierson, Ali Naqui 1997-12-23 $11,091,000
5610029 Medium for detecting target microbes in a sample Elizabeth Ehrenfeld, Colin Fricker 1997-03-11 $17,715,000
4730628 Cigarette rods having segmented sections Thomas A. Perfetti 1988-03-15 $22,094,000
4700726 Cigarette rods having segmented sections Diane R. Frye, Tammie B. Greene, Thomas A. Perfetti 1987-10-20 $33,156,000
4595024 Segmented cigarette Tammie B. Greene, Thomas A. Perfetti 1986-06-17 $42,946,000