Patents by Inventor Joseph H. Y. Niu
Joseph H. Y. Niu 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).
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Patent number: 9249351Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: GrantFiled: December 22, 2010Date of Patent: February 2, 2016Assignee: Rhodia OperationsInventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Publication number: 20130327531Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: August 20, 2013Publication date: December 12, 2013Applicant: Schlumberger Technology CorporationInventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Publication number: 20110092398Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Inventors: Manilal S. Dahanayake, Jiang Yang, Joseph H.Y. Niu, Paul Joel Derian, Ruoxin Li, David Dino
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Publication number: 20080200353Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: April 21, 2008Publication date: August 21, 2008Inventors: Manilal S. Dahayanake, Jiang Yang, Joseph H.Y. Niu, Paul Joel Derian, Ruoxin Li, David Dino
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Patent number: 7238648Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: GrantFiled: October 14, 2003Date of Patent: July 3, 2007Assignee: Schlumberger Technology CorporationInventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Patent number: 6831108Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: GrantFiled: July 6, 2001Date of Patent: December 14, 2004Assignee: Rhodia, Inc.Inventors: Manilal S. Dahanayake, Jiang Yang, Joseph H. Y. Niu, Paul Joel Derian, Ruoxin Li, David Dino
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Publication number: 20040176478Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: March 15, 2004Publication date: September 9, 2004Applicant: RHODIA, INC.Inventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Publication number: 20040082484Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: October 14, 2003Publication date: April 29, 2004Inventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul Joel Derian, Ruoxin Li, David Dino
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Patent number: 6482866Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: GrantFiled: July 10, 2000Date of Patent: November 19, 2002Assignee: Schlumberger Technology CorporationInventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Publication number: 20020002205Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: ApplicationFiled: July 6, 2001Publication date: January 3, 2002Applicant: Rhodia, Inc.Inventors: Manilal S. Dahayanake, Jiang Yang, Joseph H.Y. Niu, Paul Joel Derian, Ruoxin Li, David Dino
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Patent number: 6258859Abstract: Viscoelastic surfactant based aqueous fluid systems useful as thickening agents in various applications, e.g. to suspend particles produced during the excavation of geologic formations. The surfactants are zwitterionic/amphoteric surfactants such as dihydroxyl alkyl glycinate, alkyl ampho acetate or propionate, alkyl betaine, alkyl amidopropyl betaine and alkylimino mono- or di-propionates derived from certain waxes, fats and oils. The thickening agent is used in conjunction with an inorganic water-soluble salt or organic additive such as phthalic acid, salicylic acid or their salts.Type: GrantFiled: June 8, 1998Date of Patent: July 10, 2001Assignee: Rhodia, Inc.Inventors: Manilal S. Dahayanake, Jiang Yang, Joseph H. Y. Niu, Paul-Joel Derian, Ruoxin Li, David Dino
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Patent number: 5019341Abstract: Hydrocarbon soluble polyamidoamines prepared from tallowtriamine and/or tallowtetramine--(methyl)acrylate reactants are effective corrosion inhibitors for metal surfaces in contact with corrosive hydrocarbon mediums even under alkaline conditions.Type: GrantFiled: August 11, 1986Date of Patent: May 28, 1991Assignee: Betz Laboratories, Inc.Inventors: Joseph H. Y. Niu, James G. Edmondson, Scott E. Lehrer
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Patent number: 4894139Abstract: Certain Mannich reaction products formed from the reaction of an alkyl substituted catechol, a polyamine, and an aldehyde are used to deactivate copper metal species contained in hydrocarbon fluids. Left untreated, such copper species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.Type: GrantFiled: May 24, 1988Date of Patent: January 16, 1990Assignee: Betz Laboratories, Inc.Inventors: Paul V. Roling, Dwight K. Reid, Joseph H. Y. Niu
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Patent number: 4883580Abstract: Certain Mannich reaction products (i.e., alkylated phenol, polyoxyalkylenediamine, and an aldehyde) are used to deactivate iron species already present in hydrocarbon fluids. Left untreated, such iron species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.Type: GrantFiled: April 14, 1989Date of Patent: November 28, 1989Assignee: Betz Laboratories, Inc.Inventors: Paul V. Roling, Joseph H. Y. Niu
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Patent number: 4847415Abstract: Certain Mannich reaction products (i.e., alkylated phenol, polyoxyalkylenediamine, and an aldehyde) are used to deactivate iron species already present in hydrocarbon fluids. Left untreated, such iron species lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.Type: GrantFiled: June 1, 1988Date of Patent: July 11, 1989Assignee: Betz Laboratories, Inc.Inventors: Paul V. Roling, Joseph H. Y. Niu
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Patent number: 4810354Abstract: Alkoxylated Mannich product compositions and methods of use of same as process antifoulants are disclosed. The alkoxylated Mannich products deactivate metals and inhibit oxygen promoted polymerization in hydrocarbons and petrochemicals.Type: GrantFiled: October 31, 1986Date of Patent: March 7, 1989Assignee: Betz Laboratories, Inc.Inventors: Paul V. Roling, Joseph H. Y. Niu, Dwight K. Reid
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Patent number: 4749468Abstract: Certain Mannich reaction products (i.e., alkylated phenol, polyamine, and an aldehyde) are used to deactivate first row transition metal species contained in hydrocarbon fluids. Left untreated, such metals lead to decomposition resulting in the formation of gummy, polymer masses in the hydrocarbon liquid.Type: GrantFiled: September 5, 1986Date of Patent: June 7, 1988Assignee: Betz Laboratories, Inc.Inventors: Paul V. Roling, Joseph H. Y. Niu, Dwight K. Reid
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Patent number: 4637822Abstract: Unwanted settling in a composition comprising a suspension of fine particles of coal in fuel oil is eliminated or substantially reduced by adding an effective amount of a polyoxypropylene-polyoxyethylene copolymer which corresponds to the formula: ##STR1## in which the values of X.sub.1, X.sub.2, X.sub.3 and X.sub.4 may be the same or different, Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 may be the same or different, Y.sub.1 +Y.sub.2 +Y.sub.3 +Y.sub.4 give a total oxyethylene content of the molecule of from about 10 to 80 weight percent and X.sub.1, X.sub.2, X.sub.3 and X.sub.4 have values such that the total molecular weight of the molecule is from about 1500 to 30,000.Type: GrantFiled: November 2, 1981Date of Patent: January 20, 1987Assignee: BASF CorporationInventors: Joseph H. Y. Niu, Irving R. Schmolka
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Patent number: 4490275Abstract: Methods and compositions are disclosed for neutralizing acidic components in petroleum refining units. The neutralizing agent comprises a member selected from the group of dimethylaminoethanol and dimethylisopropanolamine. The neutralizing agent may be added directly to the charge, in a reflux line, or directly to the overhead line of the refining unit. In those instances in which sour crude is to be refined, it is desirable that dimethylisopropanolamine be used in conjunction with the dimethylaminoethanol. The neutralizing agents are added in an amount sufficient to elevate the pH of the condensate (as measured at the accumulator) to within the pH range of 4.5-7.Type: GrantFiled: October 7, 1983Date of Patent: December 25, 1984Assignee: Betz Laboratories Inc.Inventor: Joseph H. Y. Niu
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Patent number: 4430196Abstract: Methods and compositions are disclosed for neutralizing acidic components in petroleum refining units. The neutralizing agent comprises a member selected from the group of dimethylaminoethanol and dimethylisopropanolamine. The neutralizing agent may be added directly to the charge, in a reflux line, or directly to the overhead line of the refining unit. In those instances in which sour crude is to be refined, it is desirable that dimethylisopropanolamine be used in conjunction with the dimethylaminoethanol. The neutralizing agents are added in an amount sufficient to elevate the pH of the condensate (as measured at the accumulator) to within the pH range of 4.5-7.Type: GrantFiled: March 28, 1983Date of Patent: February 7, 1984Assignee: Betz Laboratories, Inc.Inventor: Joseph H. Y. Niu