ALEXANDRIA, Va., Feb. 21 -- Afton Chemical, Richmond, Virginia, has been assigned a patent (No. 10,563,146, initially filed Sept. 7, 2012) developed by four co-inventors for a "preparation and use of aminoalkylphosphonic acid dilakyl ester compounds in a lubricant for antiwear, friction reduction, and/or micropitting prevention." The co-inventors are Helen T. Ryan, London, United Kingdom, Bevin W. Parks-Lee, Midlothian, Virginia, Jeffrey J. Soden, Midlothian, Virginia, and Stuart Wickson, Leeds, . . .