Patents by Inventor Po Wen Chung
Po Wen Chung 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: 11918975Abstract: Disclosed is a modified carbonaceous material, which includes hexagonal carbon networks in a layered stacking structure and acidic functional groups bonded to the hexagonal carbon networks and mainly existing at edges of the layered carbonaceous structure. Accordingly, the close proximity of acid moiety at the edges can resemble the center of hydrolysis enzymes, resulting in enhancement of hydrolytic efficiency. Additionally, the acid-functionalized carbonaceous material can also be applied in the capture and storage of carbon dioxide due to its unexpectedly higher capacity for CO2 molecular.Type: GrantFiled: June 18, 2019Date of Patent: March 5, 2024Assignee: ACADEMIA SINICAInventors: Jia-Hui Wang, Hao-Ju Chou, Po-Wen Chung
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Publication number: 20230022210Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.Type: ApplicationFiled: September 16, 2022Publication date: January 26, 2023Inventors: Po-Wen CHUNG, Meng-Xun WU
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Patent number: 11511271Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.Type: GrantFiled: June 27, 2019Date of Patent: November 29, 2022Assignee: ACADEMIA SINICAInventors: Po-Wen Chung, Meng-Xun Wu
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Publication number: 20220064201Abstract: Disclosed is a stabilized acyclic saccharide composite, which includes a LDH-based (layered double hydroxide-based) material and acyclic saccharides intercalated in interlayer regions of the LDH-based material. The acyclic saccharides stabilized and trapped in the LDH-based material give an opportunity for direct functionalization to other valuable molecules in the pharmaceutical, chemical or carbohydrate industries. Further, a novel pathway for saccharide transformation and aldol condensation without the drawbacks associated with enzymatic catalysts is achieved through the acyclic saccharides trapped by the LDH-based material.Type: ApplicationFiled: August 27, 2021Publication date: March 3, 2022Inventors: Po-Wen CHUNG, Chia-Hui WU, Yi-Shiuan TSAI, Chun-An HSIEH
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Patent number: 11235566Abstract: A rotary screen transfer printing machine and a control system thereof. The rotary screen transfer printing machine having a feeding unit, a printing unit, a drying unit, and a receiving unit; the printing unit has at least one rotary screen transfer printing assembly and a guide belt assembly; each rotary screen transfer printing assembly has a rotary screen plate roller and a transfer roller; the rotary screen plate roller is close to the transfer roller; the transfer roller is seamlessly coated with rubber or a resin having good affinity for a water-based ink. A control system includes: a motion controller; a conveying synchronization module, used for controlling the feeding unit, the printing unit, the drying unit, and the receiving unit to synchronize the conveying speeds of the four units; and a rotary screen transfer printing synchronization module.Type: GrantFiled: May 21, 2018Date of Patent: February 1, 2022Assignee: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTDInventor: Po-Wen Chung
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Patent number: 10941130Abstract: This invention relates to a novel molten salt system in chemical transformation of saccharides and a method as well as an apparatus for multi carbon production by the molten salt system. It is found that an eutectic molten salt composition is advantageous for multi-carbon productions through chemical transformation under mild conditions. This invention further provides a method and an apparatus for preparing 5-hydroxymethylfurfural (HMF) and HMF-derived chemicals from saccharides by the said molten salt system.Type: GrantFiled: March 22, 2019Date of Patent: March 9, 2021Assignee: Academia SinicaInventors: Po-Wen Chung, Prasenjit Bhaumik, Hao-Ju Chou
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Patent number: 10926531Abstract: A vertical double-sided rotary screen transfer printing apparatus includes a vertical rack and one or more pair of rotary screen transfer printing assemblies horizontally disposed opposite to each other. Each rotary screen transfer printing assembly includes a rotary screen plate roller and a transfer roller arranged parallel to each other. The rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier. The transfer roller transfers the pattern onto a fabric passing in a vertical direction between the rotary screen transfer printing assemblies opposite to each other.Type: GrantFiled: May 28, 2018Date of Patent: February 23, 2021Assignee: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTDInventor: Po-Wen Chung
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Patent number: 10906292Abstract: A horizontal rotary screen transfer printing device includes a frame, two or more sets of rotary screen transfer printing assemblies which are horizontally disposed on the frame, and a back-pressure roller. Each rotary screen transfer printing assembly includes a rotary screen plate roller and a transfer roller arranged parallel to each other. The rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier. The transfer roller transfers the pattern onto a fabric passing between the back-pressure roller and the transfer roller in a horizontal direction.Type: GrantFiled: June 6, 2018Date of Patent: February 2, 2021Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD, CHUNG, PO-WENInventor: Po-Wen Chung
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Publication number: 20200398248Abstract: Disclosed is a modified carbonaceous material, which includes hexagonal carbon networks in a layered stacking structure and acidic functional groups bonded to the hexagonal carbon networks and mainly existing at edges of the layered carbonaceous structure. Accordingly, the close proximity of acid moiety at the edges can resemble the center of hydrolysis enzymes, resulting in enhancement of hydrolytic efficiency. Additionally, the acid-functionalized carbonaceous material can also be applied in the capture and storage of carbon dioxide due to its unexpectedly higher capacity for CO2 molecular.Type: ApplicationFiled: June 18, 2019Publication date: December 24, 2020Inventors: Jia-Hui WANG, Hao-Ju CHOU, Po-Wen CHUNG
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Patent number: 10865518Abstract: A paperless transfer printing method includes the following steps: (a) printing, by a printing machine, aqueous ink onto a transfer printing temporary carrier in a set pattern, wherein a surface of the transfer printing temporary carrier is made of an elastic polymer material and a surface tension of the aqueous ink is less than the critical surface tension of the transfer printing temporary carrier; (b) drying the to-be-transferred pattern on the transfer printing temporary carrier; (c) wetting the transfer printing temporary carrier by using an aqueous surface tension increasing liquid; and (d) separating the aqueous solution or the aqueous dispersion liquid from the transfer printing temporary carrier at a tight-contact position between the transfer printing temporary carrier and the fabric, so that an aqueous ink dye is transferred onto the fiber of the fabric.Type: GrantFiled: February 16, 2017Date of Patent: December 15, 2020Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTD.Inventor: Po-Wen Chung
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Publication number: 20200346201Abstract: Metal oxides-silica composite materials are synthesized by a co-precipitation method to serve as modified catalysts for converting ethanol into four-carbon hydrocarbons. The method includes mixing a liquid-phase silicon source and a metal precursor at different ratios so as to change the acid-base composition of the composite materials and thereby increase selectivity with respect to the four-carbon products.Type: ApplicationFiled: June 27, 2019Publication date: November 5, 2020Inventors: Po-Wen CHUNG, Meng-Xun WU
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Publication number: 20200299249Abstract: This invention relates to a novel molten salt system in chemical transformation of saccharides and a method as well as an apparatus for multi carbon production by the molten salt system. It is found that an eutectic molten salt composition is advantageous for multi-carbon productions through chemical transformation under mild conditions. This invention further provides a method and an apparatus for preparing 5-hydroxymethylfurfural (HMF) and HMF-derived chemicals from saccharides by the said molten salt system.Type: ApplicationFiled: March 22, 2019Publication date: September 24, 2020Applicant: ACADEMIA SINICAInventors: Po-Wen CHUNG, Prasenjit BHAUMIK, Hao-Ju CHOU
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Publication number: 20200180301Abstract: A rotary screen transfer printing machine and a control system thereof. The rotary screen transfer printing machine having a feeding unit, a printing unit, a drying unit, and a receiving unit; the printing unit has at least one rotary screen transfer printing assembly and a guide belt assembly; each rotary screen transfer printing assembly has a rotary screen plate roller and a transfer roller; the rotary screen plate roller is close to the transfer roller; the transfer roller is seamlessly coated with rubber or a resin having good affinity for a water-based ink. A control system includes: a motion controller; a conveying synchronization module, used for controlling the feeding unit, the printing unit, the drying unit, and the receiving unit to synchronize the conveying speeds of the four units; and a rotary screen transfer printing synchronization module.Type: ApplicationFiled: May 21, 2018Publication date: June 11, 2020Inventor: Po-Wen Chung
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Publication number: 20200164630Abstract: A horizontal rotary screen transfer printing device comprises: a frame, at least two sets of rotary screen transfer printing assemblies which are horizontally disposed on the frame, and a back-pressure roller. Each rotary screen transfer printing assembly comprises a rotary screen plate roller and a transfer roller arranged parallel to each other; the rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier; the transfer roller transfers the pattern onto a fabric passing between the back-pressure roller and the transfer roller in a horizontal direction.Type: ApplicationFiled: June 6, 2018Publication date: May 28, 2020Inventor: Po-Wen Chung
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Patent number: 10618272Abstract: A transfer dyeing method, includes: 1) coating a pretreating liquid on a front side of a fabric by a first pretreating anilox roller; 2) printing a dyeing ink on a first ink transfer roller or ink transfer ribbon by a first full-master printing plate roller; 3) transferring the dyeing ink to the front of the fabric; 4) drying the fabric and then making a back side of the fabric face to a second pretreating anilox roller; 5) coating the pretreating liquid on the back side of the fabric; 6) printing a dyeing ink that is same as or different from the dyeing ink of step 2) on a second transfer-roller or ink transfer ribbon; 7) transferring the dyeing ink to the back side of the fabric; and 8) drying the fabric, followed by color fixing, water washing and shaping.Type: GrantFiled: May 11, 2017Date of Patent: April 14, 2020Assignees: NEWTECH TEXTILE TECHNOLOGY DEVELOPMENT (SHANGHAI) CO., LTDInventor: Po-Wen Chung
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Publication number: 20200086627Abstract: A vertical duplex rotary screen transfer printing device, comprising a vertical frame and at least one pair of rotary screen transfer printing assemblies horizontally opposite to each other. Each rotary screen transfer printing assembly comprises a rotary screen plate roller and a transfer roller arranged parallel to each other; the rotary screen plate roller transfers a pattern onto the transfer roller serving as a temporary transfer carrier; the transfer roller transfers the pattern onto a fabric passing in a vertical direction between the rotary screen transfer printing assemblies opposite to each other.Type: ApplicationFiled: May 28, 2018Publication date: March 19, 2020Inventor: Po-Wen Chung
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Publication number: 20190264384Abstract: A paperless transfer printing method includes the following steps: (a) printing, by a printing machine, aqueous ink onto a transfer printing temporary carrier in a set pattern, wherein a surface of the transfer printing temporary carrier is made of an elastic polymer material and a surface tension of the aqueous ink is less than the critical surface tension of the transfer printing temporary carrier; (b) drying the to-be-transferred pattern on the transfer printing temporary carrier; (c) wetting the transfer printing temporary carrier by using an aqueous surface tension increasing liquid; and (d) separating the aqueous solution or the aqueous dispersion liquid from the transfer printing temporary carrier at a tight-contact position between the transfer printing temporary carrier and the fabric, so that an aqueous ink dye is transferred onto the fiber of the fabric.Type: ApplicationFiled: February 16, 2017Publication date: August 29, 2019Inventor: Po-Wen Chung
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Publication number: 20190217600Abstract: A transfer dyeing method, includes: 1) coating a pretreating liquid on a front side of a fabric by a first pretreating anilox roller; 2) printing a dyeing ink on a first ink transfer roller or ink transfer ribbon by a first full-master printing plate roller; 3) transferring the dyeing ink to the front of the fabric; 4) drying the fabric and then making a back side of the fabric face to a second pretreating anilox roller; 5) coating the pretreating liquid on the back side of the fabric; 6) printing a dyeing ink that is same as or different from the dyeing ink of step 2) on a second transfer-roller or ink transfer ribbon; 7) transferring the dyeing ink to the back side of the fabric; and 8) drying the fabric, followed by color fixing, water washing and shaping.Type: ApplicationFiled: May 11, 2017Publication date: July 18, 2019Inventor: Po-Wen Chung
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Patent number: 9074102Abstract: The present invention relates to a cold transfer printing paste, a printing colorant and preparation methods thereof. Specifically, the present invention relates to: a cold transfer printing past, which contains polysaccharide, sodium L-pyrrolidonecarboxylate, an etherified starch and water; a printing colorant, which contains the paste of the present invention, an active dye, a defoamer, a flatting agent, a pH stabilizing agent and water; and preparation methods of the paste and the printing colorant. The cold transfer printing paste of the present invention and a printing colorant containing the paste are applicable in a cold transfer printing process, and have stable physical properties, thereby preventing decrease of the viscosity in use.Type: GrantFiled: July 15, 2011Date of Patent: July 7, 2015Assignee: Newtech Textile Technology Development(Shanghai) Co., LtdInventor: Po-Wen Chung
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Publication number: 20140256931Abstract: The present disclosure relates carbonaceous materials and to methods of using such carbonaceous materials for purifying oligomers produced from depolymerized biomass, such as lignocellulosic biomass.Type: ApplicationFiled: October 18, 2012Publication date: September 11, 2014Applicants: BP CORPORATION NORTH AMERICA INC., THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Po-Wen Chung, Alexandre Charmot, Alexander Katz, Amit A. Gokhal