Patents by Inventor Yen Wei
Yen Wei 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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Publication number: 20160032111Abstract: The present invention relates to provide an anticorrosive layer having a biomimetic surface nano microstructure and the application. The anticorrosive layer comprises a polymer and a nano-particle. Both of the nano-particle and the biomimetic surface nano microstructure are required for the anticorrosive layer to effectively enhance the anticorrosive performance.Type: ApplicationFiled: September 3, 2014Publication date: February 4, 2016Inventors: Jui-Ming Yeh, Kung-Chin Chang, Chien-Hua Hsu, Wei-Fu Ji, Min-Hsiang Hsu, Hsin-I Lu, Mei-Chun Lai, Pei-Ju Liu, Tsao-Li Chuang, Yen Wei, Wei-Ren Liu, You-Rong Hsiao
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Patent number: 6989254Abstract: Biomacromolecules encapsulated or immobilized within mesoporous or nanoporous materials via surfactant-templated sol-gel reactions and methods for production of these encapsulated or immobilized biomacromolecules are provided.Type: GrantFiled: July 31, 2001Date of Patent: January 24, 2006Assignee: Drexel UniversityInventors: Yen Wei, Jigeng Xu, Hua Dong, Qiuwei Feng
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Patent number: 6696258Abstract: Mesoporous materials and a method for making such materials is disclosed in which the mesoporous materials are made by forming an aqueous solution having an organometallic compound; adding a solution comprising a pore forming material selected from the group consisting of monomeric polyols, polyacids, polyamines, carbohydrates, oligopeptides, oligonucleic acids, carbonyl functional organic compounds, and mixtures and derivatives of these materials to form a sol get matrix by polycondensation; drying the sot gel matrix; and removing the pore forming material from the dried sot-gel matrix to thereby form a mesoporous material. The mesoporous materials have pore diameters of from about 20 Å to about 100 Å and may be used with a biologically active agent immobilized within the pores of the mesoporous material and introduced into a biological system.Type: GrantFiled: June 21, 2000Date of Patent: February 24, 2004Assignee: Drexel UniversityInventors: Yen Wei, Danliang Jin, Tianzhong Ding, Jigeng Xu
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Publication number: 20040014189Abstract: Biomacromolecules encapsulated or immobilized within mesoporous or nanoporous materials via surfactant-templated sol-gel reactions and methods for producing these encapsulated 5 or immobilized biomacromolecules are provided.Type: ApplicationFiled: July 10, 2003Publication date: January 22, 2004Inventors: Yen Wei, Jigeng Xu, Hua Dong, Feng Qiuwei
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Patent number: 6518394Abstract: Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with other monomeric species to form a variety of copolymers. The oligomers, end-functionalized oligomers and copolymers exhibit corrosion-resistant properties and provide corrosion-resistant compounds for use on various substrates.Type: GrantFiled: January 5, 2001Date of Patent: February 11, 2003Assignee: Drexel UniversityInventors: Yen Wei, Chuncai Yang, Tianzhong Ding, Xinru Jia, Danliang Jin, Jui-Ming Yeh, Jianguo Wang
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Publication number: 20010037947Abstract: Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with other monomeric species to form a variety of copolymers. The oligomers, end-functionalized oligomers and copolymers exhibit corrosion-resistant properties and provide corrosion-resistant compounds for use on various substrates.Type: ApplicationFiled: January 5, 2001Publication date: November 8, 2001Inventors: Yen Wei, Chuncai Yang, Tianzhong Ding, Xinru Jia, Danliang Jin, Jui-Ming Yeh, Jianguo Wang
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Publication number: 20010034421Abstract: Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with other monomeric species to form a variety of copolymers. The oligomers, end-functionalized oligomers and copolymers exhibit corrosion-resistant properties and provide corrosion-resistant compounds for use on various substrates.Type: ApplicationFiled: January 4, 2001Publication date: October 25, 2001Inventors: Yen Wei, Chuncai Yang, Tianzhong Ding, Xinru Jia, Danliang Jin, Jui-Ming Yeh, Jianguo Wang
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Patent number: 6277304Abstract: Hybrid materials are formed having a homogeneous distribution of a conductive organic polymer or copolymer in an inorganic matrix. The conductive organic polymer may be electronically conductive, e.g., polyaniline, or may be ionically conductive, e.g., sulfonated polystyrene. The inorganic matrix is formed as a result of sol-gel chemistry, e.g., by the hydrolysis and condensation of tetraethyl orthosilicate and trialkoxysilyl groups in the organic polymers. A homogeneous distribution of organic polymer in the inorganic matrix is achieved by preparing separate solutions of organic polymer and sol-gel monomer, and then combining those solutions with a catalyst and stirring, to form a homogeneous clear solution. Upon evaporation of the solvent and other volatiles, a monolithic hybrid material may be formed. The combination of conductive organic polymer in an inorganic matrix provides desirable adhesion properties to an inorganic substrate while maintaining the conductivity of the organic polymer.Type: GrantFiled: May 22, 2000Date of Patent: August 21, 2001Assignee: Drexel UniversityInventors: Yen Wei, Jui-Ming Yeh, Wei Wang, Guang-Way Jang
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Patent number: 6239251Abstract: Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with other monomeric species to form a variety of copolymers. The oligomers, end-functionalized oligomers and copolymers exhibit corrosion-resistant properties and provide corrosion-resistant compounds for use on various substrates.Type: GrantFiled: April 17, 1998Date of Patent: May 29, 2001Assignee: Drexel UniversityInventors: Yen Wei, Chuncai Yang, Tianzhong Ding, Xinru Jia, Danliang Jin, Jui-Ming Yeh, Jianguo Wang
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Patent number: 6066269Abstract: Hybrid materials are formed having a homogeneous distribution of a conductive organic polymer or copolymer in an inorganic matrix. The conductive organic polymer may be electronically conductive, e.g., polyaniline, or may be ionically conductive, e.g., sulfonated polystyrene. The inorganic matrix is formed as a result of sol-gel chemistry, e.g., by the hydrolysis and condensation of tetraethyl orthosilicate and trialkoxysilyl groups in the organic polymers. A homogeneous distribution of organic polymer in the inorganic matrix is achieved by preparing separate solutions of organic polymer and sol-gel monomer, and then combining those solutions with a catalyst and stirring, to form a homogeneous clear solution. Upon evaporation of the solvent and other volatiles, a monolithic hybrid material may be formed. The combination of conductive organic polymer in an inorganic matrix provides desirable adhesion properties to an inorganic substrate while maintaining the conductivity of the organic polymer.Type: GrantFiled: October 16, 1998Date of Patent: May 23, 2000Assignee: Drexel UniversityInventors: Yen Wei, Jui-Ming Yeh, Wei Wang, Guang-Way Jang
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Patent number: 5868966Abstract: Hybrid materials are formed having a homogeneous distribution of a conductive organic polymer or copolymer in an inorganic matrix. The conductive organic polymer may be electronically conductive, e.g., polyaniline, or may be ionically conductive, e.g., sulfonated polystyrene. The inorganic matrix is formed as a result of sol-gel chemistry, e.g., by the hydrolysis and condensation of tetraethyl orthosilicate and trialkoxysilyl groups in the organic polymers. A homogeneous distribution of organic polymer in the inorganic matrix is achieved by preparing separate solutions of organic polymer and sol-gel monomer, and then combining those solutions with a catalyst and stirring, to form a homogeneous clear solution. Upon evaporation of the solvent and other volatiles, a monolithic hybrid material may be formed. The combination of conductive organic polymer in an inorganic matrix provides desirable adhesion properties to an inorganic substrate while maintaining the conductivity of the organic polymer.Type: GrantFiled: August 22, 1996Date of Patent: February 9, 1999Assignee: Drexel UniversityInventors: Yen Wei, Jui-Ming Yeh, Wei Wang, Guang-Way Jang
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Patent number: 5120807Abstract: Electrically conductive polypyrrole and its derivatives are prepared by polymerizing compounds of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen, halogen, R.sup.4, --OR.sup.4 or --SR.sup.4 ; and R.sup.4 is aryl of 4 to 12 carbons or aliphatic of 1 to 20 carbons; comprising reacting the compound of formula I in the presence of an initiator, the initiator comprising a 2-substituted pyrrole nucleus which has a lower oxidation potential than the compound of formula I and which is capable of being incorporated into the polymer resulting from the polymerization reaction; a chemical oxidant or an applied electrochemical potential; and a solvent.Type: GrantFiled: January 18, 1991Date of Patent: June 9, 1992Assignee: Drexel UniversityInventors: Yen Wei, Dachuan Yang, Jing Tian
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Patent number: 4986886Abstract: Electrically conductive polythiophene and its derivatives are prepared by polymerizing compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, R.sup.3, --OR.sup.3 or --SR.sup.3 ; and R.sup.3 is aryl of 6 to 12 carbons or aliphatic of 1 to 12 carbons; comprising reacting the compound of formula I in the presence of an initiator, the initiator comprising a 2-substituted thiophene nucleus which has a lower oxidation potential than the compound of formula I and which is capable of being incorporated into the polymer resulting from the polymerization reaction; a chemical oxidant or an applied electrochemical potential; and a non-aqueous organic solvent.Type: GrantFiled: May 30, 1990Date of Patent: January 22, 1991Assignee: Drexel UniversityInventors: Yen Wei, Guang-Way Jang, Chi-Cheung Chan
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Patent number: 4940517Abstract: Electrically conductive polyaniline and its derivatives are prepared by polymerizing compounds of the Formula: ##STR1## wherein R is --H, --OH, lower alkoxy, halogen, --COOH, --NO.sub.2 or --NH.sub.2 ; x is 0 to 4, with substitutions being ortho or meta to the amine group; R' is hydrogen or lower alkyl; comprising reacting the compound of Formula I with an initiator in the presence of a chemical oxidant and/or an applied electrochemical potential, said initiator comprising a substituted or unsubstituted aromatic amine which has a lower oxidation potential than the compound of Formula I, and which is capable of being incorporated into the polymer chain resulting from the polymerization reaction.Type: GrantFiled: November 10, 1988Date of Patent: July 10, 1990Assignee: Drexel UniversityInventor: Yen Wei