HR

Helen T. Ryan

AC Afton Chemical: 9 patents #19 of 222Top 9%
EA Ethyl Petroleum Additives: 5 patents #7 of 68Top 15%
ET Ethyl: 1 patents #298 of 494Top 65%
📍 Sheen, GB: #1 of 1 inventorsTop 100%
Overall (All Time): #309,546 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
12378494 Corrosion inhibitor and industrial lubricant including the same David Edwards, Robert E. McCovick 2025-08-05
11795412 Lubricating composition for industrial gear fluids David Edwards 2023-10-24
11149226 Preparation and use of aminoalkylphosphonic acid dialkyl ester compounds in a lubricant for antiwear, friction reduction, and/or micropitting prevention Bevin W. Parks-Lee, Jeffrey J. Soden, Stuart Wickson 2021-10-19
10563146 Preparation and use of aminoalkylphosphonic acid dilakyl ester compounds in a lubricant for antiwear, friction reduction, and/or micropitting prevention Bevin W. Parks-Lee, Jeffrey J. Soden, Stuart Wickson 2020-02-18
8962539 Friction modifiers for slideway applications Mark T. Devlin, Katie A. Hudson 2015-02-24
8227391 Lubricating composition with good oxidative stability and reduced deposit formation Ricky Shyam Prasad, John M. Taylor 2012-07-24
8003584 Lubricant compositions Mark T. Devlin, Tze-Chi Jao, John T. Loper, Carl K. Esche, Jr. 2011-08-23
7759294 Lubricant compositions Mark T. Devlin 2010-07-20
7452851 Lubricant compositions Mark T. Devlin 2008-11-18
6326336 Turbine oils with excellent high temperature oxidative stability Vincent J. Gatto, Ramnath Iyer 2001-12-04
6255263 Lubricant compositions exhibiting improved demulse performance 2001-07-03
6184186 Lubricating compositions Rodney I. Barber, Craig Paterson 2001-02-06
5767045 Hydraulic fluids 1998-06-16
5604188 Zinc additives of enhanced performance capabilities 1997-02-18
5505868 Modified dispersant compositions Roger Scattergood, Mark Rees 1996-04-09