MR

Murl Ray Richardson

SU Sunstone: 2 patents #3 of 11Top 30%
ST Sunstone Technologies: 1 patents #4 of 8Top 50%
Overall (All Time): #1,240,154 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8028750 Force balanced rotating pressure control device William James Hughes, Thomas L. Pettigrew, Kurt D. Vandervort, Kenneth D. Young 2011-10-04
7743823 Force balanced rotating pressure control device William James Hughes, Thomas L. Pettigrew, Kurt D. Vandervort, Kenneth D. Young 2010-06-29
7380590 Rotating pressure control head William James Hughes 2008-06-03
4459899 Single acting reciprocating pump piston 1984-07-17