Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RP

Robert H. Parrish — 11 Patents

SPSpectramet: 7 patents #4 of 8Top 50%
NTNational Recovery Technologies: 3 patents #6 of 16Top 40%
Nashville, TN: #149 of 2,243 inventorsTop 7%
Tennessee: #1,698 of 20,272 inventorsTop 9%
Overall (All Time): #435,149 of 4,157,543Top 15%
11 Patents All Time
Robert H. Parrish has been granted 11 US patents while listed as an inventor at Spectramet. The first was granted in 2000 and the most recent in April 2014. Robert H. Parrish ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Robert H. Parrish in Nashville, TN, US.

Patents per Year

Patents granted per year, 2000 to 2014Bar chart with a peak of 2 patents in 2013.peak 22000: 1 patents20002001: 1 patents20012003: 1 patents20032005: 1 patents20052008: 1 patents20082009: 1 patents20092010: 1 patents20102011: 1 patents20112013: 2 patents20132014: 1 patents2014

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
8692148 Method and apparatus for improving performance in container sorting Edward J. Sommer, Jr., R. Lynn Conley 2014-04-08
8553838 High speed materials sorting using X-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2013-10-08
8476545 Sorting pieces of material based on photonic emissions resulting from multiple sources of stimuli Edward J. Sommer, Jr., David B. Spencer, R. Lynn Conley, Richard E. Hill, Charles E. Roos 2013-07-02
7978814 High speed materials sorting using X-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2011-07-12
7763820 Sorting pieces of material based on photonic emissions resulting from multiple sources of stimuli Edward J. Sommer, Jr., David B. Spencer, R. Lynn Conley, Richard E. Hill, Charles E. Roos 2010-07-27
7616733 High speed materials sorting using x-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2009-11-10
RE40394 Teleoperated robotic sorting system Charles E. Roos, Edward J. Sommer, Jr., James Russell 2008-06-24
6888917 High speed materials sorting using x-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2005-05-03
6519315 High speed materials sorting using x-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2003-02-11
6266390 High speed materials sorting using x-ray fluorescence Edward J. Sommer, Jr., David B. Spencer, Charles E. Roos 2001-07-24
6124560 Teleoperated robotic sorting system Charles E. Roos, Edward J. Sommer, Jr., James Russell 2000-09-26