Inventor
WATSON RICHARD R
US25 patents
⚠️ This page may combine multiple inventors who share the name “WATSON RICHARD R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GILMORE VALVE CO
7 patentsUS5771931AJun 30, 1998
High pressure wear resistant pilot valve
GILMORE VALVE CO94 citations97
US4493335AJan 15, 1985
Shear valve
GILMORE VALVE CO58 citations96
US6318400B1Nov 20, 2001
Low interflow hydraulic shuttle valve
GILMORE VALVE CO40 citations92
US4856557AAug 15, 1989
Sliding metal seal valve mechanism
GILMORE VALVE CO45 citations92
US4793590ADec 27, 1988
Piloted check valve
GILMORE VALVE CO35 citations92
US4456028AJun 26, 1984
Relief gate valve
GILMORE VALVE CO37 citations92
US6527010B1Mar 4, 2003
Single pilot dual pulse spool valve
GILMORE VALVE CO13 citations84
GILMORE VALVE CO LTD
4 patentsUS6651696B2Nov 25, 2003
Relief valve
GILMORE VALVE CO LTD50 citations92
US6568418B1May 27, 2003
Precision regulator
GILMORE VALVE CO LTD14 citations83
US6571822B2Jun 3, 2003
Low blow down relief valve
GILMORE VALVE CO LTD14 citations82
US6497251B1Dec 24, 2002
Hydraulic latching spool valve
GILMORE VALVE CO LTD12 citations73
NAT COUPLING CO INC
3 patentsUS7159616B2Jan 9, 2007
Dual path hydraulic coupling
NAT COUPLING CO INC46 citations92
US7520291B2Apr 21, 2009
Pressure-compensated, subsea chemical injection valve
NAT COUPLING CO INC14 citations84
US9523262B2Dec 20, 2016
Method for autonomous control of a chemical injection system for oil and gas wells
NAT COUPLING CO INC2 citations59