Patents by Inventor Yuan-Chia Chang
Yuan-Chia Chang 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: 20230383184Abstract: An etchant composition including an oxidizing agent, an organic tertiary amine or quaternary amine represented by the following Formula (1) or Formula (2), a basic compound, and a solvent, the etchant composition having a pH value of 7 or higher. In Formula (1) and Formula (2), R1 and R2 each independently represents an alkyl group having 1 to 4 carbon atoms or a group represented by —(C2H4O)nH, where n represents 1 or 2, and R1 and R2 may be bonded to each other to form a nitrogen-containing heterocyclic ring together with the nitrogen atom; and R3 represents a linear alkyl group having 4 to 18 carbon atoms, which may be substituted with a hydroxy group or an amino group at a terminal, and a methylene group included in the linear alkyl group may be substituted with an oxygen atom.Type: ApplicationFiled: May 18, 2023Publication date: November 30, 2023Inventors: Yuan-Chia Chang, Po Ting Chou, Ming-Yen Chung
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Patent number: 10017385Abstract: The present invention provides a catalyst composition for producing hydrogen and preparation method and use thereof, wherein the catalyst composition comprises a catalytic component and a supporter having a pyrochlore structure. By using the catalyst composition of the present invention, carbon deposition can be reduced and the oxidative steam reforming of ethanol could be operated for a long period of time with high ethanol conversion rate and selectivity of hydrogen.Type: GrantFiled: July 8, 2016Date of Patent: July 10, 2018Assignee: National Chiao Tung UniversityInventors: Chi-Shen Lee, Yuan-Chia Chang, Ho-Chen Hsieh
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Publication number: 20170152138Abstract: The present invention provides a catalyst composition for producing hydrogen and preparation method and use thereof, wherein the catalyst composition comprises a catalytic component and a supporter having a pyrochlore structure. By using the catalyst composition of the present invention, carbon deposition can be reduced and the oxidative steam reforming of ethanol could be operated for a long period of time with high ethanol conversion rate and selectivity of hydrogen.Type: ApplicationFiled: July 8, 2016Publication date: June 1, 2017Inventors: Chi-Shen Lee, Yuan-Chia Chang, Ho-Chen Hsieh
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Patent number: 9623400Abstract: The present invention provides a catalyst for producing hydrogen and a preparing method thereof. The method includes the steps of adding a first metal source, a second metal source, a third metal source and a cerium source into a first organic solvent containing a surfactant to form a colloidal mixture, wherein a metal of the first metal source is a Group IIIB metal; a metal of the second metal source is selected from the group consisting of alkali metals, alkaline earth metals and Group IIIB metals, and a metal of the third metal source is a transition metal; calcining the colloidal mixture to form a metal solid solution; and allowing the metal solid solution to be carried on a carrier to obtain the catalyst. When the catalyst of the present invention is used for an ethanol oxidation reformation, the reaction temperature of the ethanol oxidation reformation can be significantly decreased.Type: GrantFiled: September 11, 2015Date of Patent: April 18, 2017Assignee: National Chiao Tung UniversityInventors: Chi-Shen Lee, Ping-Wen Tsai, Ho-Chen Hsieh, Yun-Sheng Chen, Yuan-Chia Chang, Sheng-Feng Weng
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Publication number: 20160220984Abstract: The present invention provides a catalyst for producing hydrogen and a preparing method thereof. The method includes the steps of adding a first metal source, a second metal source, a third metal source and a cerium source into a first organic solvent containing a surfactant to form a colloidal mixture, wherein a metal of the first metal source is a Group IIIB metal; a metal of the second metal source is selected from the group consisting of alkali metals, alkaline earth metals and Group IIIB metals, and a metal of the third metal source is a transition metal; calcining the colloidal mixture to form a metal solid solution; and allowing the metal solid solution to be carried on a carrier to obtain the catalyst. When the catalyst of the present invention is used for an ethanol oxidation reformation, the reaction temperature of the ethanol oxidation reformation can be significantly decreased.Type: ApplicationFiled: September 11, 2015Publication date: August 4, 2016Inventors: Chi-Shen Lee, Ping-Wen Tsai, Ho-Chen Hsieh, Yun-Sheng Chen, Yuan-Chia Chang, Sheng-Feng Weng
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Patent number: 8940333Abstract: An amphiphilic block copolymer is disclosed. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nanoparticle and carrier including the amphiphilic block copolymer for delivery of water insoluble drugs, growth factors, genes, or water insoluble cosmetic substances.Type: GrantFiled: March 21, 2008Date of Patent: January 27, 2015Assignee: Industrial Technology Research InstituteInventors: Ming-Fa Hsieh, Hsuen-Tseng Cha'ng, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin
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Patent number: 8420119Abstract: This present disclosure relates to pharmaceutical compositions for treating tumors using a polymeric micelle encapsulating an anti-tumor drug. The polymeric micelle comprises block copolymers comprising at least one hydrophilic block, at least one hydrophobic block, and at least one zwitterion. The present disclosure also relates to methods of enhancing the solubility of such drugs, methods of increasing the blood circulating time of such drugs, and methods of delivering such drugs to one or more solid tumors.Type: GrantFiled: August 20, 2009Date of Patent: April 16, 2013Assignee: Industrial Technology Research InstituteInventors: Yuan-Hung Hsu, Chu-Chun Hsueh, Yuan-Chia Chang, Jui-Mei Lu, Pei Kan
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Publication number: 20120156128Abstract: A controllable release composition is provided, including a polymer substrate and an active ingredient, in which the polymer substrate is a polymer blend including a biodegradable polyester, polyanhydride, and/or polyether, and the active ingredient includes a radioactive agent or a chemotherapeutic agent. The controllable release composition is useful for cancer therapy, particularly for solid cancer treatment.Type: ApplicationFiled: December 9, 2011Publication date: June 21, 2012Inventors: Yu-Li CHANG, Yuan-Chia Chang, Min-Ying Lin, Xi-Zhang Lin
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Publication number: 20120100220Abstract: This present disclosure relates to pharmaceutical compositions for treating tumors using a polymeric micelle encapsulating an anti-tumor drug. The polymeric micelle comprises block copolymers comprising at least one hydrophilic block, at least one hydrophobic block, and at least one zwitterion. The present disclosure also relates to methods of enhancing the solubility of such drugs, methods of increasing the blood circulating time of such drugs, and methods of delivering such drugs to one or more solid tumors.Type: ApplicationFiled: August 20, 2009Publication date: April 26, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yuan-Hung Hsu, Chu-Chun Hsueh, Yuan-Chia Chang, Jui-Mei Lu, Pei Kan
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Patent number: 8124128Abstract: An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.Type: GrantFiled: November 8, 2005Date of Patent: February 28, 2012Assignee: Industrial Technology Research InstituteInventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin, Yuan-Hung Hsu
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Publication number: 20070104654Abstract: An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.Type: ApplicationFiled: November 8, 2005Publication date: May 10, 2007Inventors: Ming-Fa Hsieh, Hsuen-Tseng Chang, Chin-Fu Chen, Yuan-Chia Chang, Pei Kan, Tsai-Yu Lin
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Patent number: 6673286Abstract: A method of making a porous biodegradable polymer is disclosed, which comprises (a) placing a biodegradable polymer and a solvent in a chamber; (b) adding a supercritical fluid to the chamber and maintaining the chamber at a predetermined temperature for a sufficient period of time to allow the supercritical fluid to dissolve into the biodegradable polymer with the help of the solvent; and (c) venting the supercritical fluid and the solvent by reducing the pressure in the chamber, thereby obtaining a porous biodegradable polymer.Type: GrantFiled: September 4, 2001Date of Patent: January 6, 2004Assignee: Industrial Technology Research InstituteInventors: Hsi-Hsin Shih, Kuang-Rong Lee, Huey-Min Lai, Chin-Chin Tsai, Yuan-Chia Chang
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Patent number: 6670454Abstract: The present invention relates to crosslinking of porous materials made of biodegradable polymers. The method comprises: (a) placing a porous biodegradable polymer in a chamber; (b) introducing a supercritical fluid containing a crosslinking agent into the chamber to effect crosslinking of the porous biodegradable polymer; and optionally (c) introducing a pure supercritical into the chamber to wash the crosslinked polymer until the crosslinking agent is substantially removed from the polymer.Type: GrantFiled: November 1, 2001Date of Patent: December 30, 2003Assignee: Industrial Technology Research InstituteInventors: Huey-Min Lai, Kuang-Rong Lee, Chin-Chin Tsai, Hsi-Hsin Shih, Yuan-Chia Chang
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Patent number: 6635684Abstract: The present invention discloses a method for preparing a hydrophilic porous polymeric material comprising the step of mixing a hydrophilic polymeric material with a hydrophobic material; solvent sintering the surface of the hydrophilic polymeric material with water or an aqueous solution; and removing the hydrophobic material contained within the hydrophilic polymeric material with a massive organic solvent. Thus, the hydrophilic porous polymeric material with high porosity and stable structure is rapidly mass produced.Type: GrantFiled: October 19, 2001Date of Patent: October 21, 2003Assignee: Industrial Technology Research InstituteInventors: Huey-Min Lai, Chun-Hui Chang, Chun-Jen Liao, Chin-Fu Chen, Kuei-Hung Wu, Yuan-Chia Chang, Yu-Yen Jan, Tsung-Yi Mou
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Publication number: 20030153638Abstract: The present invention relates to crosslinking of porous materials made of biodegradable polymers. The method comprises: (a) placing a porous biodegradable polymer in a chamber; (b) introducing a supercritical fluid containing a crosslinking agent into the chamber to effect crosslinking of the porous biodegradable polymer; and optionally (c) introducing a pure supercritical into the chamber to wash the crosslinked polymer until the crosslinking agent is substantially removed from the polymer.Type: ApplicationFiled: November 1, 2001Publication date: August 14, 2003Applicant: Industrial Technology Research InstituteInventors: Huey-Min Lai, Kuang-Rong Lee, Chin-Chin Tsai, Hsi-Hsin Shih, Yuan-Chia Chang
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Publication number: 20030064156Abstract: A method of making a porous biodegradable polymer is disclosed, which comprises (a) placing a biodegradable polymer and a solvent in a chamber; (b) adding a supercritical fluid to the chamber and maintaining the chamber at a predetermined temperature for a sufficient period of time to allow the supercritical fluid to dissolve into the biodegradable polymer with the help of the solvent; and (c) venting the supercritical fluid and the solvent by reducing the pressure in the chamber, thereby obtaining a porous biodegradable polymer.Type: ApplicationFiled: September 4, 2001Publication date: April 3, 2003Applicant: Industrial Technology Research InstituteInventors: Hsi-Hsin Shih, Kuang-Rong Lee, Huey-Min Lai, Chin-Chin Tsai, Yuan-Chia Chang
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Publication number: 20020086977Abstract: The present invention discloses a method for preparing a hydrophilic porous polymeric material comprising the step of mixing a hydrophilic polymeric material with a hydrophobic material; solvent sintering the surface of the hydrophilic polymeric material with water or an aqueous solution; and removing the hydrophobic material contained within the hydrophilic polymeric material with a massive organic solvent. Thus, the hydrophilic porous polymeric material with high porosity and stable structure is rapidly mass produced.Type: ApplicationFiled: October 19, 2001Publication date: July 4, 2002Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Huey-Min Lai, Chun-Hui Chang, Chun-Jen Liao, Chin-Fu Chen, Kuei-Hung Wu, Yuan-Chia Chang, Yu-Yen Jan, Tsung-Yi Mou