Patents by Inventor Rodney Lu-Dai Sung

Rodney Lu-Dai Sung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition of matter for high temperature phenolphthalein-, phenolphmalide-, fluorene-, xanthane-, and anthrone-s-triazines that are soluble in diesel fuel
    Patent number: 5322528
    Abstract: A composition of matter comprising a mixture of:a) phenolphthaleins-s-triazines;b) phenolphthalides-s-triazines;c) 9,9-bis-(4-hydroxy phenyl)fluorene -triazines;d) 3,6-dihydroxyspiro[fluorene-9,9-xanthane]-s-triazines;e) 10,10-bis-(4-hydroxyl phenyl)anthrone-s-triazines; andf) 9,9,10,10-tetrakis-(4-hydroxylphenyl)-anthracene -s-triazines.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: June 21, 1994
    Assignee: Texaco Inc.
    Inventors: Rodney Lu-Dai Sung, Thomas F. DeRosa, Benjamin J. Kaufman
  • Composition of matter for aloyl and aroyl ureas as nitric oxide reducing agents in diesel emissions
    Patent number: 5292351
    Abstract: A composition of matter comprising:a) an aloyl urea represented by the formula ##STR1## where R.sub.1 is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl, or aryl hydrocarbon; andb) an aroyl urea represented by the formula ##STR2## where R.sub.1 is a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; and Z is a heteroatom selected from the group consisting of Group IVa, Group Va and Group VIa materials of the periodic table.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Rodney Lu-Dai Sung, Benjamin J. Kaufman
  • ORI-Inhibited and deposit-resistant motor fuel composition
    Patent number: 4981493
    Abstract: A motor fuel composition which inhibits engine ORI and resists engine deposit formation comprises a mixture of hydrocarbons boiling in the range of 90.degree. F.-450.degree. F. and the reaction product of a dibasic acid anhydride, a polyoxyalkylene polyol, and a nitrogen-containing compound selected from the group consisting of: (i) a C.sub.2 -C.sub.8 polyalkylene polyamine, (ii) a polyoxyalkylene diamine, and (iii) a heterocyclic azole.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: January 1, 1991
    Assignee: Texaco Inc.
    Inventor: Rodney Lu-Dai Sung
  • Hydrocarbon compositions containing polyolefin graft polymers
    Patent number: 4952637
    Abstract: Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: August 28, 1990
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Larry D. Grina, Ronald E. Jones, Rodney Lu-Dai Sung
  • Ori-inhibited and deposit-resistant motor fuel composition
    Patent number: 4865621
    Abstract: A motor fuel composition which inhibits engine ORI and resists engine and carburetor deposit formation comprises a mixture of hydrocarbons boiling in the range of 90.degree. F.-450.degree. F. and the reaction product of a dibasic acid anhydride, a polyoxyalkylene monoamine, and a hydrocarbyl polyamine.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: September 12, 1989
    Assignee: Texaco Inc.
    Inventor: Rodney Lu-Dai Sung
  • Wear-resistant aircraft engine lubricating oil
    Patent number: 4514311
    Abstract: A wear-resistant aircraft engine oil contains a reaction product of didodecyl phosphate and ##STR1## wherein x+y+z is 5.3.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: April 30, 1985
    Assignee: Texaco Inc.
    Inventors: Rodney Lu-Dai Sung, William M. Sweeney, Benjamin H. Zoleski