Patents by Inventor Dung-An Chang
Dung-An 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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Patent number: 11999400Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: GrantFiled: June 20, 2023Date of Patent: June 4, 2024Assignee: Seville Classics Inc.Inventors: Edwin Ho, Wen-Dung Chang
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Patent number: 11973192Abstract: The invention provides an electrode body for a cylindrical lithium battery, which is formed by winding a laminated body including a negative electrode sheet, a first separator, a positive electrode sheet, a plurality of cathode tabs and a plurality of anode tabs, wherein the negative sheet and the positive sheet have a negative electrode coating and a positive electrode coating, respectively. In the present invention, the positive electrode coating is provided on the positive electrode sheet in a specific configuration to increase the coating area of the positive electrode coating, thereby increasing the capacitance of the electrode body.Type: GrantFiled: October 7, 2021Date of Patent: April 30, 2024Assignee: E-ONE MOLI ENERGY CORP.Inventors: Jui-Min Tsai, Tsung-Yi Tsai, Kun-Miao Tsai, Wei-Dung Chang
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Publication number: 20230347956Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: ApplicationFiled: June 20, 2023Publication date: November 2, 2023Applicant: Seville Classics Inc.Inventors: Edwin Ho, Wen-Dung Chang
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Patent number: 11702121Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: GrantFiled: November 20, 2022Date of Patent: July 18, 2023Assignee: Serille Classics, Inc.Inventors: Edwin Ho, Wen-Dung Chang
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Publication number: 20230079350Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: ApplicationFiled: November 20, 2022Publication date: March 16, 2023Applicant: Seville Classics Inc.Inventors: Edwin Ho, Wen-Dung Chang
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Patent number: 11511784Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: GrantFiled: December 20, 2020Date of Patent: November 29, 2022Assignee: Seville Classics, IncInventors: Edwin Ho, Wen-Dung Chang
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Publication number: 20220194452Abstract: A hamper has a fabric bag, and a supporting frame assembly that has a foldable wall assembly, a base and a top frame. The foldable wall assembly has a rear frame, a left frame a right frame. The base has a rear side that is pivotally connected with the bottom side of the rear frame, with the left and right sides of the base removably coupled to the bottom sides of the left frame and the right frame, respectively. The top frame has a rear side that is removably coupled to the top side of the rear frame, with the left and right sides of the top frame removably coupled to the top sides of the left frame and the right frame, respectively. The fabric bag has four side walls, each side wall having a lip extending around the upper edge of each side wall, and four vertical corner sleeve pockets.Type: ApplicationFiled: December 20, 2020Publication date: June 23, 2022Applicant: Seville Classics Inc.Inventors: Edwin Ho, Wen-Dung Chang
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Publication number: 20220115713Abstract: The invention provides an electrode body for a cylindrical lithium battery, which is formed by winding a laminated body including a negative electrode sheet, a first separator, a positive electrode sheet, a plurality of cathode tabs and a plurality of anode tabs, wherein the negative sheet and the positive sheet have a negative electrode coating and a positive electrode coating, respectively. In the present invention, the positive electrode coating is provided on the positive electrode sheet in a specific configuration to increase the coating area of the positive electrode coating, thereby increasing the capacitance of the electrode body.Type: ApplicationFiled: October 7, 2021Publication date: April 14, 2022Applicant: E-ONE MOLI ENERGY CORP.Inventors: Jui-Min Tsai, Tsung-Yi Tsai, Kun-Miao Tsai, Wei-Dung Chang
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Patent number: 11065687Abstract: A method for manufacturing hollow and other metal products of irregular shape provides metal powder and binding agent, and the two are feed-mixed and heated to a plastic state. The feed-mix is injected in a mold cavity of a first injection mold to form a first blank, and injected in a mold cavity of a second injection mold to form a second blank. The first blank and the second blank are welded together to form a built-up blank which is degreased to remove the binding agent therein. The degreased built-up blank is sintered to obtain the metal product of irregular shape.Type: GrantFiled: January 2, 2018Date of Patent: July 20, 2021Assignee: CHAMP TECH OPTICAL (FOSHAN) CORPORATIONInventors: Dung-Chang Yeh, Yi-Fan Lin, Jin-Hong Zhu
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Publication number: 20200368819Abstract: A powder feed for injection molding process includes a first metal powder, and a second metal powder. The first metal powder and the second metal powder are mixed together evenly. The second metal powder has a mass percentage of about less than 10% of a total mass of the powder feed for injection molding process. The first metal powder is resistant to the corrosion by a chemical reagent, and the second metal powder is corrodible in the chemical reagent.Type: ApplicationFiled: August 14, 2020Publication date: November 26, 2020Inventors: JIN-HONG ZHU, DUNG-CHANG YEH
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Patent number: 10780499Abstract: A method for manufacturing a porous metal with enhanced ability to bond to a plastic subsequently powder feed for injection molding process provides a powder feed to an injection molding process, to form a green embryo. The green embryo is sent into a sintering furnace for high-temperature sintering to obtain a blank sintered product. A chemical reagent is applied to form pores on the sintered product. The powder feed includes first and second metal powders evenly mixed. The second metal powder has a mass percentage of about less than 10% of a total mass of the powder feed for injection molding process. The first metal powder is corrosion-resistant. The second metal powder is readily corrodible.Type: GrantFiled: February 27, 2019Date of Patent: September 22, 2020Assignee: CHAMP TECH OPTICAL (FOSHAN) CORPORATIONInventors: Jin-Hong Zhu, Dung-Chang Yeh
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Publication number: 20200291497Abstract: A method of making stainless steel includes smelting metal material and atomizing and powdering the smelted metal material to obtain a first alloy powder, detecting a mass fraction of manganese in the first alloy powder, heating and kneading the first alloy powder with plastic, and granulating, injection molding, and sintering the first alloy powder kneaded with plastic to obtain stainless steel. If the mass fraction of manganese in the first alloy powder is less than 12%, before heating and kneading with plastic, a predetermined amount of manganese-containing material is added to the first alloy powder to obtain a second alloy powder having a mass fraction of manganese of 12-15%.Type: ApplicationFiled: April 1, 2019Publication date: September 17, 2020Inventors: DUNG-CHANG YEH, JIN-HONG ZHU
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Publication number: 20200164434Abstract: A method for manufacturing a porous metal with enhanced ability to bond to a plastic subsequently powder feed for injection molding process provides a powder feed to an injection molding process, to form a green embryo. The green embryo is sent into a sintering furnace for high-temperature sintering to obtain a blank sintered product. A chemical reagent is applied to form pores on the sintered product. The powder feed includes first and second metal powders evenly mixed. The second metal powder has a mass percentage of about less than 10% of a total mass of the powder feed for injection molding process. The first metal powder is corrosion-resistant. The second metal powder is readily corrodible.Type: ApplicationFiled: February 27, 2019Publication date: May 28, 2020Inventors: JIN-HONG ZHU, DUNG-CHANG YEH
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Publication number: 20190366430Abstract: A powder injection molding feedstock includes powder particles, a main binder, and a secondary binder. A glass-transition temperature of the secondary binder is greater than a glass-transition temperature of the main binder, the secondary binder coats the powder particles, and the main binder coats the secondary binder and the powder particles.Type: ApplicationFiled: August 19, 2019Publication date: December 5, 2019Inventors: DUNG-CHANG YEH, LEI YAN, RU-JIE HUANG
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Patent number: 10434571Abstract: A method for manufacturing a powder injection molding feedstock includes providing a plurality of powder particles and a secondary binder and applying primary kneading in an internal mixer. The primary mixture is cooled and crushed. A main binder is provided and put into the internal mixer to mix with the mixture that being crushed for secondary kneading to obtain the powder injection molding feedstock. Glass-transition temperature of the secondary binder is greater than glass-transition temperature of the main binder. The secondary binder coats the powder particles. The main binder coats the secondary binder and the powder particles.Type: GrantFiled: October 26, 2017Date of Patent: October 8, 2019Assignee: CHAMP TECH OPTICAL (FOSHAN) CORPORATIONInventors: Dung-Chang Yeh, Lei Yan, Ru-Jie Huang
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Publication number: 20190193162Abstract: A method for manufacturing metal product having irregular shapes includes steps of providing powder and binding agent, and mixing the powder and binding agent as a mixed feed. The mixed feed is heated to a plastic state, and injected into a mold cavity to form a plurality of blanks. The blanks are degreased to remove the binding agent and are sintered to form workpieces. A substrate or substrates and the workpieces form different parts of the metal product having irregular shapes. The workpieces are disposed on substrate to form a preform and the preform is bonded to form the metal products of irregular shape.Type: ApplicationFiled: February 2, 2018Publication date: June 27, 2019Inventors: YI-FAN LIN, DUNG-CHANG YEH
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Publication number: 20190168307Abstract: A method for manufacturing hollow and other metal products of irregular shape provides metal powder and binding agent, and the two are feed-mixed and heated to a plastic state. The feed-mix is injected in a mold cavity of a first injection mold to form a first blank, and injected in a mold cavity of a second injection mold to form a second blank. The first blank and the second blank are welded together to form a built-up blank which is degreased to remove the binding agent therein. The degreased built-up blank is sintered to obtain the metal product of irregular shape.Type: ApplicationFiled: January 2, 2018Publication date: June 6, 2019Inventors: DUNG-CHANG YEH, YI-FAN LIN, JIN-HONG ZHU
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Publication number: 20190039132Abstract: A method for manufacturing a powder injection molding feedstock includes providing a plurality of powder particles and a secondary binder and applying primary kneading in an internal mixer. The primary mixture is cooled and crushed. A main binder is provided and put into the internal mixer to mix with the mixture that being crushed for secondary kneading to obtain the powder injection molding feedstock. Glass-transition temperature of the secondary binder is greater than glass-transition temperature of the main binder. The secondary binder coats the powder particles. The main binder coats the secondary binder and the powder particles.Type: ApplicationFiled: October 26, 2017Publication date: February 7, 2019Inventors: DUNG-CHANG YEH, LEI YAN, RU-JIE HUANG
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Patent number: 8932014Abstract: A fan assembly includes a first fan and a second fan stacked together. Each of the first fan and the second fan includes a frame and a supporting base received in the frame. Several extending portions extend from a bottom of the frame of the first fan. A buckling block is formed on an inner side face of each of the extending portions. Several receiving portions are formed at a top of the frame of the second fan corresponding to the extending portions, respectively. A positioning groove is defined in each of the receiving portions. The buckling blocks are engagingly received in the positioning grooves.Type: GrantFiled: September 22, 2011Date of Patent: January 13, 2015Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Jin-Long Zhao, Dung-Chang Yeh
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Patent number: D807424Type: GrantFiled: February 8, 2016Date of Patent: January 9, 2018Assignee: UNIFORM INDUSTRIAL CORP.Inventors: Dung-An Chang, Kang-Ting Chao