Patents by Inventor Jia-Chang Wang
Jia-Chang Wang 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).
-
Patent number: 12115725Abstract: A stereolithographic apparatus has a machine body disposed with a swept platform, which has a recess formed by recessing into a circumference of the swept platform. A build platform driven by the linear actuator to move is aligned with and abuts against a recess. A motor and a light-emitting device are disposed in the machine body. The motor drives a recoating blade to sweep on the swept platform and the build platform. By rotating the recoating blade, the slurry material could circularly spread the slurry material onto the build platform to form multiple build layers. After each build layer is spread, the light-emitting device irradiates the build layer to partially cure the build layer to form a build layer. By repeating the aforementioned process, the build layers are formed to pile as a printed product (e.g. green body), thereby rapidly producing a delicate product without supporting structure.Type: GrantFiled: December 5, 2022Date of Patent: October 15, 2024Assignee: 3DCELAIN LTD.Inventors: Jia-Chang Wang, Shin-Hua You
-
Publication number: 20240322041Abstract: A semiconductor device includes a semiconductor layer. A gate structure is disposed over the semiconductor layer. A spacer is disposed on a sidewall of the gate structure. A height of the spacer is greater than a height of the gate structure. A liner is disposed on the gate structure and on the spacer. The spacer and the liner have different material compositions.Type: ApplicationFiled: May 24, 2024Publication date: September 26, 2024Inventors: Huan-Chieh Su, Chih-Hao Wang, Kuo-Cheng Chiang, Wei-Hao Wu, Zhi-Chang Lin, Jia-Ni Yu, Yu-Ming Lin, Chung-Wei Hsu
-
Publication number: 20230173752Abstract: A stereolithographic apparatus has a machine body disposed with a swept platform, which has a recess formed by recessing into a circumference of the swept platform. A build platform driven by the linear actuator to move is aligned with and abuts against a recess. A motor and a light-emitting device are disposed in the machine body. The motor drives a recoating blade to sweep on the swept platform and the build platform. By rotating the recoating blade, the slurry material could circularly spread the slurry material onto the build platform to form multiple build layers. After each build layer is spread, the light-emitting device irradiates the build layer to partially cure the build layer to form a build layer. By repeating the aforementioned process, the build layers are formed to pile as a printed product (e.g. green body), thereby rapidly producing a delicate product without supporting structure.Type: ApplicationFiled: December 5, 2022Publication date: June 8, 2023Applicant: National Taipei University of TechnologyInventors: JIA-CHANG WANG, SHIN-HUA YOU
-
Patent number: 11198247Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a composition is provided. The AM system comprises a vat assembly having a vat, a pump, and a density control reservoir and an AM assembly having a blade system and a build system. The pump system pumps the composition from the vat, having a first and second fluid outlet and at least one perforated outlet extension attached thereto, to the density control reservoir and then back into the vat through an inlet conduit. The at least one perforated outlet extension has a tube attachment mechanism and at least one elongated perforated tube assembly communicating therewith. The blade system has a dispersing blade and cutting blade, dispersing the composition from the inlet conduit toward and throughout a central top level of the composition and cutting a top surface of the composition, respectively.Type: GrantFiled: July 9, 2019Date of Patent: December 14, 2021Assignee: National Taipei University of TechnologyInventors: Jia Chang Wang, Tseng Pu Yang, Hitesh Dommati
-
Patent number: 10967561Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a liquid photocurable composition is provided. The AM system comprises a gas sphere assembly and an AM assembly. The gas sphere assembly comprises a prep chamber and a generation system having a generation chamber including a gas sphere generation unit, a jet source chamber including a sphere unit, and a gas chamber, a reservoir, and a gas cylinder. When a gas is fed to the gas chamber and the liquid photocurable composition is fed to the jet source chamber and generation chamber, the gas is pushed through a plurality of first openings of the sphere unit, and then a plurality of micro-openings of the gas sphere generation unit, to generate the plurality of closed-packed gas spheres. The plurality of closed-packed gas spheres are employed in the AM system for fabrication of the 3D printed object.Type: GrantFiled: June 17, 2018Date of Patent: April 6, 2021Assignee: National Taipei University of TechnologyInventors: Jia Chang Wang, Tseng Pu Yang
-
Publication number: 20210008792Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a composition is provided. The AM system comprises a vat assembly having a vat, a pump, and a density control reservoir and an AM assembly having a blade system and a build system. The pump system pumps the composition from the vat, having a first and second fluid outlet and at least one perforated outlet extension attached thereto, to the density control reservoir and then back into the vat through an inlet conduit. The at least one perforated outlet extension has a tube attachment mechanism and at least one elongated perforated tube assembly communicating therewith. The blade system has a dispersing blade and cutting blade, dispersing the composition from the inlet conduit toward and throughout a central top level of the composition and cutting a top surface of the composition, respectively.Type: ApplicationFiled: July 9, 2019Publication date: January 14, 2021Inventors: Jia Chang Wang, Tseng Pu Yang, Hitesh Dommati
-
Publication number: 20190381722Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a liquid photocurable composition is provided. The AM system comprises a gas sphere assembly and an AM assembly. The gas sphere assembly comprises a prep chamber and a generation system having a generation chamber including a gas sphere generation unit, a jet source chamber including a sphere unit, and a gas chamber, a reservoir, and a gas cylinder. When a gas is fed to the gas chamber and the liquid photocurable composition is fed to the jet source chamber and generation chamber, the gas is pushed through a plurality of first openings of the sphere unit, and then a plurality of micro-openings of the gas sphere generation unit, to generate the plurality of closed-packed gas spheres. The plurality of closed-packed gas spheres are employed in the AM system for fabrication of the 3D printed object.Type: ApplicationFiled: June 17, 2018Publication date: December 19, 2019Inventors: Jia Chang Wang, Tseng Pu Yang
-
Patent number: 7978609Abstract: A packet scheduler is configured to perform quality of service (QoS) scheduling on a per-data unit basis. A downstream processing engine is operatively connected to the packet scheduler for receiving forwarded packets. A feedback path is operatively connected between the downstream processing engine and the packet scheduler for transmitting a net data unit change value reflecting a change in packet size between an output of the packet scheduler and an output of the downstream processing engine.Type: GrantFiled: May 22, 2009Date of Patent: July 12, 2011Assignee: Juniper Networks, Inc.Inventors: Sreeram Veeragandham, Rami Rahim, Song Zhang, Anurag P. Gupta, Jorge Cruz-Rios, Jayabharat Boddu, Jeffrey R. Zimmer, Jia-Chang Wang, Srihari Shoroff, Chi-Chung K. Chen
-
Publication number: 20090245246Abstract: A packet scheduler is configured to perform quality of service (QoS) scheduling on a per-data unit basis. A downstream processing engine is operatively connected to the packet scheduler for receiving forwarded packets. A feedback path is operatively connected between the downstream processing engine and the packet scheduler for transmitting a net data unit change value reflecting a change in packet size between an output of the packet scheduler and an output of the downstream processing engine.Type: ApplicationFiled: May 22, 2009Publication date: October 1, 2009Applicant: JUNIPER NETWORKS, INC.Inventors: Sreeram Veeragandham, Rami Rahim, Song Zhang, Anurag P. Gupta, Jorge Cruz-Rios, Jayabharat Boddu, Jeffrey R. Zimmer, Jia-Chang Wang, Srihari Shoroff, Chi-Chung K. Chen
-
Patent number: 7554919Abstract: A packet scheduler is configured to perform quality of service (QoS) scheduling on a per-data unit basis. A downstream processing engine is operatively connected to the packet scheduler for receiving forwarded packets. A feedback path is operatively connected between the downstream processing engine and the packet scheduler for transmitting a net data unit change value reflecting a change in packet size between an output of the packet scheduler and an output of the downstream processing engine.Type: GrantFiled: June 9, 2004Date of Patent: June 30, 2009Assignee: Juniper Networks, Inc.Inventors: Sreeram Veeragandham, Rami Rahim, Song Zhang, Anurag P. Gupta, Jorge Cruz-Rios, Jayabharat Boddu, Jeffrey R. Zimmer, Jia-Chang Wang, Srihari Shoroff, Chi-Chung K. Chen
-
Patent number: 7320946Abstract: A dynamic mask module is disclosed, which comprises a microcomputer system, a mask pattern generator and a light source. The mask pattern generator is disposed over a substrate and electrically connected to the microcomputer system. The microcomputer system transmits an image signal to the mask pattern generator. The light source is disposed over the mask pattern generator to a photo-resist layer on the substrate. The mask pattern generated by the dynamic mask module is a dynamic image and the mask pattern can be changed on anytime. In addition, the manufacturing cost can be and the manufacturing time can be reduced.Type: GrantFiled: July 15, 2005Date of Patent: January 22, 2008Assignee: National Taiwan University of Science and TechnologyInventors: Jeng-Ywan Jeng, Jia-Chang Wang, Chang-Ho Shen
-
Publication number: 20050244727Abstract: A dynamic mask module is disclosed, which comprises a microcomputer system, a mask pattern generator and a light source. The mask pattern generator is disposed over a substrate and electrically connected to the microcomputer system. The microcomputer system transmits an image signal to the mask pattern generator. The light source is disposed over the mask pattern generator to a photo-resist layer on the substrate. The mask pattern generated by the dynamic mask module is a dynamic image and the mask pattern can be changed on anytime. In addition, the manufacturing cost can be and the manufacturing time can be reduced.Type: ApplicationFiled: July 15, 2005Publication date: November 3, 2005Inventors: Jeng-Ywan Jeng, Jia-Chang Wang, Chang-Ho Shen
-
Publication number: 20050244757Abstract: A dynamic mask module is disclosed, which comprises a microcomputer system, a mask pattern generator and a light source. The mask pattern generator is disposed over a substrate and electrically connected to the microcomputer system. The microcomputer system transmits an image signal to the mask pattern generator. The light source is disposed over the mask pattern generator to a photo-resist layer on the substrate. The mask pattern generated by the dynamic mask module is a dynamic image and the mask pattern can be changed on anytime. In addition, the manufacturing cost can be and the manufacturing time can be reduced.Type: ApplicationFiled: July 14, 2005Publication date: November 3, 2005Inventors: Jeng-Ywan Jeng, Jia-Chang Wang, Chang-Ho Shen
-
Publication number: 20050083498Abstract: A dynamic mask module is disclosed, which comprises a micro-computer system, a mask pattern generator and a light source. The mask pattern generator is disposed over a substrate and electrically connected to the microcomputer system. The microcomputer system transmits an image signal to the mask pattern generator. The light source is disposed over the mask pattern generator to a photo-resist layer on the substrate. The mask pattern generated by the dynamic mask module is a dynamic image and the mask pattern can be changed on anytime. In addition, the manufacturing cost can be and the manufacturing time can be reduced.Type: ApplicationFiled: December 25, 2003Publication date: April 21, 2005Inventors: Jeng-Ywan Jeng, Jia-Chang Wang, Chang-Ho Shen