Patents by Inventor Yeonsuk Roh
Yeonsuk Roh 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: 11440231Abstract: The present invention relates to a process for the production of a reinforced polyamide (rP) in an extruder. In this process, a first mixture (M1), a second mixture (M2) and a third mixture (M3) are added into the extruder, and subsequently at least one carbon material is added to obtain a carbon containing polymerizable mixture (cpM) in the extruder. This carbon containing polymerizable mixture (cpM) is polymerized and subsequently devolatilized to obtain the reinforced polyamide (rP). Furthermore, the present invention relates to the reinforced polyamide (rP) obtainable by the inventive process.Type: GrantFiled: August 16, 2017Date of Patent: September 13, 2022Assignee: BASF SEInventors: Florian Puch, Shyam Sundar Sathyanarayana, Yeonsuk Roh, Natalie Beatrice Janine Herle
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Patent number: 10352011Abstract: A method for increasing moisture retention in a soil includes applying an effective amount of an effective humectant composition to the soil. The effective humectant composition is identified by determining the average moisture content of the soil for the humectant compositions applied at a minimum humectant concentration level, a maximum humectant concentration level, and at a first concentration level between the minimum and the maximum humectant concentration level. An average slope curve is generated by plotting the determined average moisture content of the soil for each applied humectant concentration levels from the minimum humectant concentration level to the maximum humectant concentration level. An effective humectant composition is determined when the generated average slope curve provides an increasing average moisture content along the entirety of a length of the generated average slope curve and when the generated average slope curve has a p value of 0.05 or less.Type: GrantFiled: March 13, 2014Date of Patent: July 16, 2019Assignee: BASF SEInventors: John P. Erickson, Yeonsuk Roh, Daniel Niedzwiecki
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Publication number: 20190202102Abstract: The present invention relates to a process for the production of a reinforced polyamide (rP) in an extruder. In this process, a first mixture (M1), a second mixture (M2) and a third mixture (M3) are added into the extruder, and subsequently at least one carbon material is added to obtain a carbon containing polymerizable mixture (cpM) in the extruder. This carbon containing polymerizable mixture (cpM) is polymerized and subsequently devolatilized to obtain the reinforced polyamide (rP). Furthermore, the present invention relates to the reinforced polyamide (rP) obtainable by the inventive process.Type: ApplicationFiled: August 16, 2017Publication date: July 4, 2019Inventors: Florian Puch, Shyam Sundar Sathyanarayana, Yeonsuk Roh, Natalie Beatrice Janine Herle
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Publication number: 20180142063Abstract: A process for increasing the wetting rate of hydrophobic media with a wetting composition includes the steps of combining water and a heteric polyol to form the wetting composition, aging the wetting composition for an amount of time sufficient to increase the cloud point of the wetting composition to greater than 23° C., and applying the wetting composition to the hydrophobic media. The heteric polyol has the following formula: X[Y(CH2CH2O)a(CH2CHCH3O)bH]c wherein X is an organic core derived from an initiator having at least two hydroxyl groups; Y is a heteric copolymer comprising at least two different alkyleneoxy units selected from the group of ethyleneoxy units, propyleneoxy units, and butyleneoxy units; the subscripts a and b are independently zero or a positive integer and at least one of a or b must be a positive integer; and the subscript c is an integer of two or greater.Type: ApplicationFiled: May 6, 2016Publication date: May 24, 2018Inventors: Daniel Niedzwiecki, Yeonsuk Roh, John P. Erickson
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Patent number: 9944845Abstract: A proppant includes a particle present in an amount of from 90 to 99.5 percent by weight and a polymeric coating disposed about the particle and present in an amount of from 0.5 to 10 percent by weight, based on the total weight of the proppant. The polymeric coating is formed from a curable composition comprising an isocyanate, an acrylate, and a polyol. A method of forming the proppant includes the steps of combining the isocyanate, the acrylate, and the polyol to form the curable composition, coating the particle with the curable composition, and curing the curable composition to form the polymeric coating.Type: GrantFiled: March 13, 2014Date of Patent: April 17, 2018Assignee: BASF SEInventors: Christopher M. Tanguay, Yeonsuk Roh, Rajesh Kumar
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Publication number: 20160032179Abstract: A proppant includes a particle present in an amount of from 90 to 99.5 percent by weight and a polymeric coating disposed about the particle and present in an amount of from 0.5 to 10 percent by weight, based on the total weight of the proppant. The polymeric coating is formed from a curable composition comprising an isocyanate, an acrylate, and a polyol. A method of forming the proppant includes the steps of combining the isocyanate, the acrylate, and the polyol to form the curable composition, coating the particle with the curable composition, and curing the curable composition to form the polymeric coating.Type: ApplicationFiled: March 13, 2014Publication date: February 4, 2016Inventors: Christopher M. Tanguay, Yeonsuk Roh, Rajesh Kumar
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Publication number: 20150315458Abstract: A proppant includes a surface treatment comprising an antistatic component and a hydrophilic component. The antistatic component comprises a quaternary ammonium compound. The hydrophilic component comprises a polyether polyol. A method of forming the proppant comprises the step of applying the surface treatment onto the proppant.Type: ApplicationFiled: December 9, 2013Publication date: November 5, 2015Inventors: Christohper M. TANGUAY, Charles Omotayo KEROBO, Yeonsuk ROH, Stephen F. GROSS
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Publication number: 20140270984Abstract: A method for increasing moisture retention in a soil includes applying an effective amount of an effective humectant composition to the soil. The effective humectant composition is identified by determining the average moisture content of the soil for the humectant compositions applied at a minimum humectant concentration level, a maximum humectant concentration level, and at a first concentration level between the minimum and the maximum humectant concentration level. An average slope curve is generated by plotting the determined average moisture content of the soil for each applied humectant concentration levels from the minimum humectant concentration level to the maximum humectant concentration level. An effective humectant composition is determined when the generated average slope curve provides an increasing average moisture content along the entirety of a length of the generated average slope curve and when the generated average slope curve has a p value of 0.05 or less.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: BASF SEInventors: John P. Erickson, Yeonsuk Roh, Daniel Niedzwiecki
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Patent number: 8308975Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.Type: GrantFiled: October 25, 2011Date of Patent: November 13, 2012Assignee: BASF SEInventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore Michael Smiecinski
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Publication number: 20120041089Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Patent number: 8084631Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.Type: GrantFiled: May 15, 2008Date of Patent: December 27, 2011Assignee: BASF SEInventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Publication number: 20090286896Abstract: A polyol includes the reaction product of an epoxidized oil and an organic acid. The epoxidized oil and the organic acid are reacted in the presence of a Lewis base catalyst including at least one of a phosphorous atom or a nitrogen atom. The polyol is formed by a method that includes the step of reacting the epoxidized oil with the organic acid in the presence of the Lewis base catalyst.Type: ApplicationFiled: May 15, 2008Publication date: November 19, 2009Inventors: Yeonsuk Roh, Rajesh Kumar, Cheng-Le Zhao, David Kaczan, Theodore M. Smiecinski
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Patent number: 7459263Abstract: The invention relates to an optical recording material comprising: a polymeric matrix; a dewarbenzene derivative reactant capable of undergoing isomerization to a benzene product upon triplet excitation, thereby causing a change in optical properties; and a sensitizer capable of absorbing actinic radiation to cause triplet energy transfer to said reactant, wherein the algebraic sum of the excitation energy of said sensitizer and its reduction potential is at least 0.05 eV less than the oxidation potential of said reactant, thereby precluding one-electron oxidation of said reactant. The invention further relates to an optical device comprising regional variations in concentrations of reactants and products produced by triplet chain isomerization, thereby providing a pattern of intelligence.Type: GrantFiled: September 17, 2004Date of Patent: December 2, 2008Assignee: Eastman Kodak CompanyInventors: Samir Y. Farid, Douglas R. Robello, Joseph P. Dinnocenzo, Paul B. Merkel, Lorraine Ferrar, Yeonsuk Roh, Mark R. Mis
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Publication number: 20050136357Abstract: The invention relates to an optical recording material comprising: a polymeric matrix; a dewarbenzene derivative reactant capable of undergoing isomerization to a benzene product upon triplet excitation, thereby causing a change in optical properties; and a sensitizer capable of absorbing actinic radiation to cause triplet energy transfer to said reactant, wherein the algebraic sum of the excitation energy of said sensitizer and its reduction potential is at least 0.05 eV less than the oxidation potential of said reactant, thereby precluding one-electron oxidation of said reactant. The invention further relates to an optical device comprising regional variations in concentrations of reactants and products produced by triplet chain isomerization, thereby providing a pattern of intelligence.Type: ApplicationFiled: September 17, 2004Publication date: June 23, 2005Inventors: Samir Farid, Douglas Robello, Joseph Dinnocenzo, Paul Merkel, Lorraine Ferrar, Yeonsuk Roh, Mark Mis