Inventor
RYAN HELEN T
GB12 patents
⚠️ This page may combine multiple inventors who share the name “RYAN HELEN T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ETHYL PETROLEUM ADDITIVES LTD
5 patentsUS6255263B1Jul 3, 2001
Lubricant compositions exhibiting improved demulse performance
ETHYL PETROLEUM ADDITIVES LTD34 citations91
US5767045AJun 16, 1998
Hydraulic fluids
ETHYL PETROLEUM ADDITIVES LTD34 citations91
US5505868AApr 9, 1996
Modified dispersant compositions
ETHYL PETROLEUM ADDITIVES LTD25 citations90
US6184186B1Feb 6, 2001
Lubricating compositions
ETHYL PETROLEUM ADDITIVES LTD38 citations87
US5604188AFeb 18, 1997
Zinc additives of enhanced performance capabilities
ETHYL PETROLEUM ADDITIVES LTD15 citations72
AFTON CHEMICAL CORP
5 patentsUS7759294B2Jul 20, 2010
Lubricant compositions
AFTON CHEMICAL CORP10 citations83
US7452851B2Nov 18, 2008
Lubricant compositions
AFTON CHEMICAL CORP2 citations62
US8962539B2Feb 24, 2015
Friction modifiers for slideway applications
AFTON CHEMICAL CORP2 citations56
US8003584B2Aug 23, 2011
Lubricant compositions
AFTON CHEMICAL CORP0 citations51
US11149226B2Oct 19, 2021
Preparation and use of aminoalkylphosphonic acid dialkyl ester compounds in a lubricant for antiwear, friction reduction, and/or micropitting prevention
AFTON CHEMICAL CORP0 citations50
RYAN HELEN T
2 patentsUS8227391B2Jul 24, 2012
Lubricating composition with good oxidative stability and reduced deposit formation
RYAN HELEN T7 citations77
US10563146B2Feb 18, 2020
Preparation and use of aminoalkylphosphonic acid dilakyl ester compounds in a lubricant for antiwear, friction reduction, and/or micropitting prevention
RYAN HELEN T0 citations36