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

Robert A. Plundo — 7 Patents

ENEngelhard: 3 patents #122 of 518Top 25%
HPHarshaw/Filtrol Partnership: 1 patents #12 of 34Top 40%
Shell Oil Compny: 1 patents #2,223 of 4,423Top 55%
TCThe Harshaw Chemical: 1 patents #6 of 26Top 25%
Hudson, OH: #108 of 536 inventorsTop 25%
Ohio: #11,780 of 73,341 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Robert A. Plundo has been granted 7 US patents while listed as an inventor at Engelhard. The first was granted in 1990 and the most recent in January 2002. Robert A. Plundo ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Robert A. Plundo in Hudson, OH, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6342464 Catalyst and process for preparing 1,3-propanediol Juan P. Arhancet, Paul Benjerman Himelfarb, Joseph Broun Powell, Mohammed Shahjahan Kazi, William J. Carrick 2002-01-29
5945570 Catalyst and process for preparing 1,3-propanediol Juan P. Arhancet, Paul Benjerman Himelfarb, Joseph Broun Powell, Mohammed Shahjahan Kazi, William J. Carrick 1999-08-31
5418201 Hydrogenation catalyst and process for preparing same Brian Roberts, Deepak S. Thakur, Thomas J. Sullivan 1995-05-23 $40,306,000
5243095 Hydrogenation catalyst, process for preparing and process for using said catalyst Brian Roberts, Deepak S. Thakur, Thomas J. Sullivan 1993-09-07 $9,783,000
5035793 Hydrotreating catalyst and process Eugene Nebesh, Steven L. McMahon 1991-07-30 $10,281,000
4957895 Hydrotreating catalyst and process Eugene Nebesh, Steven L. McMahon 1990-09-18
4900711 Hydrotreating catalyst Eugene Nebesh, Steven L. McMahon 1990-02-13 $6,328,000