Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
MR

Michael W. Rootham — 6 Patents

DEDominion Engineering: 3 patents #6 of 19Top 35%
WEWestinghouse Electric: 3 patents #1,062 of 5,139Top 25%
Monroeville, PA: #136 of 710 inventorsTop 20%
Pennsylvania: #13,581 of 74,527 inventorsTop 20%
Overall (All Time): #871,806 of 4,157,543Top 25%
6 Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7344602 Scale conditioning agents and treatment method Robert D. Varrin, Jr. 2008-03-18
6740168 Scale conditioning agents Robert D. Varrin, Jr. 2004-05-25
6572709 Ultrasonic cleaning method Sotaro Kaneda, Naonobu Sasada, Robert D. Varrin, Jr. 2003-06-03
5841826 Method of using a chemical solution to dislodge and dislocate scale, sludge and other deposits from nuclear steam generators Mark J. Parvin 1998-11-24
5764717 Chemical cleaning method for the removal of scale sludge and other deposits from nuclear steam generators 1998-06-09
4379081 Method of encapsulating waste radioactive material James A. Forrester 1983-04-05