Patents by Inventor Yu-Sen Chen
Yu-Sen Chen 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: 10787408Abstract: A method for producing 9,9-bis(3-phenyl-4-(2-hydroxyethoxy)phenyl)fluorene is provided. The method includes the steps of: performing a condensation reaction with fluorenone and 2-[(2-phenyl)phenoxy]ethanol in the presence of a catalyst and co-catalyst, wherein the catalyst is alkylsulfonic acid, and the co-catalyst is a mercapto-containing compound, thereby effectively reducing the formation of a by-product, such that the product has characteristics of low chroma, high purity, and high yield.Type: GrantFiled: February 11, 2020Date of Patent: September 29, 2020Assignee: CHINA PETROCHEMICAL DEVELOPMENT CORPORATIONInventors: Ding-Chi Huang, Yu-Sen Chen, Chih-Wei Chang, Wei-Ying Li
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Publication number: 20200131110Abstract: The present disclosure provides a method for preparing o-phenyl phenoxyalkyl acrylate, including: transesterifying an acrylate-based compound with a biphenyl alcohol compound in the absence of a solvent and in the presence of a catalyst and a polymerization inhibitor to prepare the o-phenyl phenoxyalkyl acrylate represented by the following formula (II), wherein the catalyst is a compound containing a tin element or a titanium element. According to the method of the present disclosure, the o-phenyl phenoxyalkyl acrylate having transparency and high refractive index can be obtained. Moreover, the method of the present disclosure has the characteristics of high conversion rate and high selectivity, and does not need to add other organic solvents, so that many purification processes can be saved, and the production cost is effectively reduced, which has the value of industrial application.Type: ApplicationFiled: June 20, 2019Publication date: April 30, 2020Applicant: China Petrochemical Development Corporation, Taipei (Taiwan)Inventors: Yu-Sen Chen, Min-Chia Huang, Yu-Chiao Liu, Chih-Wei Chang
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Patent number: 10633325Abstract: The present disclosure provides a method for preparing o-phenyl phenoxyalkyl acrylate, including: transesterifying an acrylate-based compound with a biphenyl alcohol compound in the absence of a solvent and in the presence of a catalyst and a polymerization inhibitor to prepare the o-phenyl phenoxyalkyl acrylate represented by the following formula (II), wherein the catalyst is a compound containing a tin element or a titanium element. According to the method of the present disclosure, the o-phenyl phenoxyalkyl acrylate having transparency and high refractive index can be obtained. Moreover, the method of the present disclosure has the characteristics of high conversion rate and high selectivity, and does not need to add other organic solvents, so that many purification processes can be saved, and the production cost is effectively reduced, which has the value of industrial application.Type: GrantFiled: June 20, 2019Date of Patent: April 28, 2020Assignee: China Petrochemical Development Corporation, Taipei (Taiwan)Inventors: Yu-Sen Chen, Min-Chia Huang, Yu-Chiao Liu, Chih-Wei Chang
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Patent number: 10336928Abstract: New compositions, for example, corrosion inhibited compositions, and the like compositions and new methods of using such compositions are disclosed. Such compositions may be liquid solutions, for example, substantially without solid material formation and/or crystal formation, and may include different concentrations of organic acid components and/or different combinations of organic acid components relative to previous compositions. The present compositions may be used as antifreeze coolant compositions or formulations, for example, in the cooling systems of internal combustion engines.Type: GrantFiled: October 9, 2015Date of Patent: July 2, 2019Inventors: Yu-Sen Chen, Dennis Kelly, Scott Smith
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Publication number: 20180273821Abstract: A corrosion inhibitor for a coolant formulation. The corrosion inhibitor includes m-toluic acid. The m-toluic acid may be present in an amount of 0.05-10 wt. % based on the total weight of the coolant formulation. The corrosion inhibitor may additionally include sebacic acid. The sebacic acid may be present in an amount of 0.05-10 wt. % based on the total weight of the coolant formulation.Type: ApplicationFiled: December 8, 2016Publication date: September 27, 2018Applicant: Cummin Filtration IP, Inc.Inventors: Doug Hudgens, Lauren Lewis, Yu Sen Chen, Dakota Johnson
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Publication number: 20160102233Abstract: New compositions, for example, corrosion inhibited compositions, and the like compositions and new methods of using such compositions are disclosed. Such compositions may be liquid solutions, for example, substantially without solid material formation and/or crystal formation, and may include different concentrations of organic acid components and/or different combinations of organic acid components relative to previous compositions. The present compositions may be used as antifreeze coolant compositions or formulations, for example, in the cooling systems of internal combustion engines.Type: ApplicationFiled: October 9, 2015Publication date: April 14, 2016Inventors: Yu-Sen Chen, Dennis Kelly, Scott Smith
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Patent number: 7524434Abstract: Methods of treating aqueous coolants in open circulating water cooling tower systems are provided. The methods including placing a controlled release additive composition in contact with an open circulating aqueous coolant in an open circulating water cooling tower system. The controlled release additive composition includes a core having at least one additive selected from corrosion inhibitors and scale inhibitors; and a coating, for example, a polymeric coating, substantially surrounding the core. The coating is substantially insoluble in the aqueous coolant, and is effective to slow the release of the at least one additive into the aqueous coolant.Type: GrantFiled: August 31, 2004Date of Patent: April 28, 2009Assignee: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen
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Patent number: 7001531Abstract: A coolant additive composition comprising a sustained release component and an additive component, the additive component is effective to provide at least one benefit to a coolant when released into the coolant, the sustained release component includes a polymeric material and is effective to reduce the rate of release of the additive component into the coolant relative to an identical composition without the sustained release component.Type: GrantFiled: August 24, 2001Date of Patent: February 21, 2006Assignees: Dober Chemical Corp., FleetGuard, Inc.Inventors: Yu-Sen Chen, Doug Hudgens, Thomas J. Blakemore, Joseph C. Drozd
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Patent number: 6878309Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: GrantFiled: February 12, 2001Date of Patent: April 12, 2005Assignee: Dober Chemical Corp.Inventors: Thomas J. Blakemore, Yu-Sen Chen
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Patent number: 6860241Abstract: This invention relates to a fuel filter for use with internal combustion engines. The fuel filter includes a fuel additive that can be released into fuel. The rate of release for the fuel can be controlled. In one form the fuel additive can be mixed with a matrix material and released at a substantially constant rate to maintain a uniform level of fuel additive in the fuel. Use of the present invention provides a fuel filter having an extended life span that is longer than fuel filters typically used with combustion engines.Type: GrantFiled: August 24, 2001Date of Patent: March 1, 2005Assignees: Dober Chemical Corp., Fleetguard, Inc.Inventors: Harold Martin, David M. Stehouwer, Joseph C. Drozd, Yu-Sen Chen
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Publication number: 20050023505Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: ApplicationFiled: August 31, 2004Publication date: February 3, 2005Applicant: Dober Chemical CorporationInventors: Thomas Blakemore, Yu-Sen Chen
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Patent number: 6835218Abstract: A fuel additive composition comprising a sustained release component and an additive component, the additive component is effective to provide at least one benefit to a fuel when released into the fuel, the sustained release component is (1) a polymeric material, (2) substantially insoluble in the fuel, and (3) effective to reduce the rate of release of the additive component into the fuel relative to an identical composition without the sustained release component.Type: GrantFiled: August 24, 2001Date of Patent: December 28, 2004Assignees: Dober Chemical Corp., FleetGuard, Inc.Inventors: Joseph C. Drozd, Harold R. Martin, Yu-Sen Chen
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Publication number: 20030218150Abstract: A chemical composition and method of deployment into a coolant or coolant systems to provide at least one benefit to the system. The additive compositions includes a silicate component and a silicate stabilizer, the compositions being in the form of a solid, a non-flowable semi-solid or a flowable semi-solid which is dissolved into a coolant and enters the cooling system so as to provide at least one benefit to a coolant system when released, for example, to protect an engine. The method of deployment into the coolant and subsequently the cooling systems includes injecting or dissolving the additive into the coolant, forming the additive to the housing of the system or forming the coolant to the filter located in the housing of the cooling system.Type: ApplicationFiled: February 26, 2003Publication date: November 27, 2003Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen, Heather Michalesko
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Patent number: 6607694Abstract: A controlled-release coolant additive composition for use in engine coolant systems comprising a core containing at least one coolant additive component and a polymeric coating encapsulating said core. The controlled released coolant additive composition slowly releases the coolant additive components to an engine coolant system, thereby delivering an effective concentration level of coolant additive components over an extended period. The controlled-release coolant additive composition maintains a minimum concentration level of active coolant additive components in the coolant system.Type: GrantFiled: March 31, 2000Date of Patent: August 19, 2003Assignee: Dober Chemical Corp.Inventors: Thomas J. Blakemore, Yu-Sen Chen
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Publication number: 20030122104Abstract: A liquid replacement system is provided for introducing additives to an open recirculating system or a closed loop boiler water system in a controlled manner. The liquid replacement system comprises a make-up line and an additive system disposed therein. A make-up liquid enters into the make-up line where the additive system is structured to provide a controlled release of an additive to the make-up liquid, and the make-up liquid carries the additives into the open recirculating system or a closed loop boiler water system. The liquid replacement system allows for controlled release of additive components to the open recirculating system or the closed loop boiler water system, thereby delivering an effective concentration of additive components over an extended period.Type: ApplicationFiled: February 12, 2003Publication date: July 3, 2003Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen, Dennis Kelly
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Publication number: 20030053927Abstract: Provided are compositions and methods for releasing oxygen scavengers into a coolant. The compositions include a controlled release component and an oxygen scavenger component which includes at least one oxygen scavenger. Methods and devices for releasing oxygen scavengers into a coolant are also provided.Type: ApplicationFiled: October 15, 2002Publication date: March 20, 2003Applicant: Dober Chemical CorporationInventors: Joseph C. Drozd, Thomas J. Blakemore, Yu-Sen Chen
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Publication number: 20030042208Abstract: A coolant additive composition comprising a sustained release component and an additive component, the additive component is effective to provide at least one benefit to a coolant when released into the coolant, the sustained release component includes a polymeric material and is effective to reduce the rate of release of the additive component into the coolant relative to an identical composition without the sustained release component.Type: ApplicationFiled: August 24, 2001Publication date: March 6, 2003Inventors: Yu-Sen Chen, Doug Hudgens, Thomas J. Blakemore, Joseph C. Drozd
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Publication number: 20020195380Abstract: This invention relates to a fuel filter for use with internal combustion engines. The fuel filter includes a fuel additive that can be released into fuel. The rate of release for the fuel can be controlled. In one form the fuel additive can be mixed with a matrix material and released at a substantially constant rate to maintain a uniform level of fuel additive in the fuel. Use of the present invention provides a fuel filter having an extended life span that is longer than fuel filters typically used with combustion engines.Type: ApplicationFiled: August 24, 2001Publication date: December 26, 2002Inventors: Harold Martin, David M. Stehouwer, Joseph C. Drozd, Yu-Sen Chen
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Publication number: 20020153505Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: ApplicationFiled: February 12, 2001Publication date: October 24, 2002Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen