Patents by Inventor Jeng-Ywan Jeng

Jeng-Ywan Jeng 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).

  • Publication number: 20240207928
    Abstract: The invention provides a composite particle material for selective laser sintering (SLS), which is composed of an inorganic powder coated with a binder. The composite particulate material is formed by mixing the inorganic powder and the binder to have the binder directly coated on the outer surface of the inorganic powder. In addition, the inorganic powder to be coated by the binder is preferably using a powder having a smaller particle size and a larger particle size distribution, and thereby the production cost can be greatly reduced. Further, since the outer surface of the inorganic powder is coated with the binder, there are no problems such as causing oxidation of the inorganic powder and so on. Furthermore, manufacturing the composite particle material can be easily carried out in a general ambient or an atmospheric environment, and the powder material after use is recyclable.
    Type: Application
    Filed: January 16, 2023
    Publication date: June 27, 2024
    Inventors: Yu-Deh Chao, Shu-Cheng Liu, Jeng-Ywan Jeng, Fu-Lin Chen
  • Patent number: 11964428
    Abstract: The present invention provides a bottom plate of a resin tank for three-dimensional printing, which is manufactured through the following steps: substrate surface roughening step: treating the upper surface of a transparent substrate by using a plasma, or disposing a composite film on the upper surface of the transparent substrate to form a non-smooth surface structure having pores; substrate surface modification step: sequentially performing an activation treatment and a fluorination treatment on the upper surface of the transparent substrate; and stabilizer filling step: applying a stabilizer to the upper surface of the transparent substrate to fill the stabilizer penetrates into the pores on the upper surface of the transparent substrate. The low surface energy film reduces the adhesion of the hardened photosensitive material, and the stabilizer maintains the structure of the low surface energy film, so that the resin tank bottom plate has both oleophobic and hydrophobic properties.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: April 23, 2024
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jeng-Ywan Jeng, Ming-Hua Ho, Ping-Hsun Tsai
  • Publication number: 20240065765
    Abstract: A method of orthopedic treatment includes steps of: by using a computer aided design (CAD) tool based on profile data that is related to a to-be-treated part of a bone of a patient, obtaining a model of a preliminary instrument that substantially fits the to-be-treated part; by using the CAD tool, obtaining a model of a patient specific instrument (PSI) based on the model of the preliminary instrument; producing the PSI based on the model of the PSI, the PSI being adjustable; performing medical operation on the to-be-treated part, and then attaching the PSI to the to-be-treated part; after attaching the PSI to the to-be-treated part, adjusting the PSI such that the PSI is adapted to real conditions of the to-be-treated part.
    Type: Application
    Filed: August 22, 2023
    Publication date: February 29, 2024
    Inventors: Alvin Chao-Yu CHEN, Yi-Sheng CHAN, Chi-Pin HSU, Shang-Chih LIN, Chin-Ju WU, Jeng-Ywan JENG
  • Publication number: 20230416549
    Abstract: The present invention provides a method for 3D inkjet printing, which comprises: a preheating step: an external heating source is used to heat a main body layer composed of a first composition to a first temperature, wherein the main body layer has a thickness of 10 ?m to 500 ?m and a unit density of 0.1 to 1.0 g/cm3, and the first temperature is less than the melting point of the first composition; a heating step: a second composition is applied to the surface of the first composition at the first temperature of the composite to proceed an exothermic cross-linking polymerization, so that the main body layer is heated to a second temperature to become a molten state; and a cooling step: the main body layer in the molten state is cooled down and solidified to form.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Inventors: Chorng-Shyan Chern, Jeng-Ywan Jeng, Ya-Ting Chang, Cheng-Che Lu
  • Patent number: 11795339
    Abstract: The present invention provides a method for 3D inkjet printing, which comprises: a preheating step: an external heating source is used to heat a main body layer composed of a first composition to a first temperature, wherein the main body layer has a thickness of 10 ?m to 500 ?m and a unit density of 0.1 to 1.0 g/cm3, and the first temperature is less than the melting point of the first composition; a heating step: a second composition is applied to the surface of the first composition at the first temperature of the composite to proceed an exothermic cross-linking polymerization, so that the main body layer is heated to a second temperature to become a molten state; and a cooling step: the main body layer in the molten state is cooled down and solidified to form.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 24, 2023
    Assignee: National Taiwan University of Science and Technology
    Inventors: Chorng-Shyan Chern, Jeng-Ywan Jeng, Ya-Ting Chang, Cheng-Che Lu
  • Publication number: 20230264450
    Abstract: The metallic crystal structures inspired edge-to-edge tessellations and a tessellation based lattice structures are disclosed. In accordance with an exemplary embodiment of the invention, basic unit lattice cells are stacked and connected to constitute a three-dimensional tessellations, wherein each of the basic unit lattice cells comprises a multiple flat connecting portions formed on a surface of the basic unit lattice cell and intersecting with a multiple of axes intersecting in a center of the basic unit lattice cell, and the flat connecting portions of one of the basic unit lattice cell is connected to the flat connecting portions of the adjacent basic unit lattice cell to constitute a connection structure of edge-to-edge tessellation. The formed tessellations are periodically tessellated in a design domain to form different tessellated lattice structures. The Functionally Tessellated (FT) lattice structures composed of different tessellations by interlocking into each other are also disclosed.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 24, 2023
    Inventors: Chinmai Bhat, Ajeet Kumar, Jeng-Ywan Jeng
  • Publication number: 20230181300
    Abstract: The present invention provides a smart tooth cleaning device comprises a hand piece having a bearing surface, a tooth cleaning piece, a driving module connected to the tooth cleaning piece for driving the tooth cleaning piece to move, a first camera module comprising a first optical lens and a first image capturing element, and a first light source module comprising a plurality of light-emitting elements. The tooth cleaning piece has a tooth cleaning body, a brush head, and a plurality of bristles. The first camera module is disposed on the bearing surface and is electrically connected to the control module. The first image capturing element receives light along an optical axis of the first optical lens. A first angle ?1 between the optical axis and a first direction, is in a range of 5°to 30°. The first light source module is disposed on the bearing surface.
    Type: Application
    Filed: May 11, 2022
    Publication date: June 15, 2023
    Inventors: Jeng-Ywan Jeng, Zheng-Ye She, Cheng-Yi Tsai, Azam Hamza, Ajeet Kumar
  • Publication number: 20230158742
    Abstract: A high-speed additive manufacturing apparatus includes a main body, a sintering module, a product carrying member, a raw material carrying member, and a raw material wiper. The main body includes a printing tank and a raw material tank adjacent to the printing tank. The sintering module is arranged on the main body. The sintering module includes a plurality of sintering light source assemblies. Each of the sintered light source assemblies has a light beam emitting end. The light beam emitting end emits a sintering light beam. The light beam emitting ends of the sintering light source assemblies are arranged in a plurality of rows. Each light beam emitting end in one row is unaligned with the light beam emitting end in adjacent rows along a direction in which the light beam emitting end moves.
    Type: Application
    Filed: June 29, 2022
    Publication date: May 25, 2023
    Inventors: Jeng-Ywan Jeng, Chih-Hua Hsieh, Hou-Ching Lee, Yi-Chia Chen, Shaou-Chi Liu, Tzu-Yu Hsieh, Zhi-Kai Huang
  • Publication number: 20230141628
    Abstract: A large area deposition type additive manufacturing equipment is disclosed. The large area deposition type additive manufacturing equipment includes a light source module, a dynamic photomask module, a raw material tank and a deposition module. The light source module includes a plurality of light emitting members, a light diffusion member, a light enhancement member and a light emitting angle limiter. Light emitted from the light emitting members passes through the light diffusion member, the light enhancement member and the light emitting angle limiter to become a collimated curing light. The collimated curing light travels through a transparent member of the raw material tank and a dynamic photomask module to reach liquid photocurable material in the raw material tank, thereby curing the liquid photocurable material. The angle of emitted light ranges within ±30° with respect to a normal line of an incident plane of the light source module.
    Type: Application
    Filed: May 29, 2022
    Publication date: May 11, 2023
    Inventors: Jeng-Ywan Jeng, Ding-Zheng Lin, Ping-Hung Yu, Yu-Cheng Chen
  • Publication number: 20230117377
    Abstract: A composite additive structure comprising a three-dimensional base structure and a filled structure is provided. The three-dimensional base structure comprises a shell and a cavity enclosed by the shell. The filled structure is filled in the cavity and connected to the shell to form a solid composite structure. A composite additive manufacturing equipment includes a forming stage, a first material supply module and a second material supply module. The forming stage includes a forming member. The first material supply module provides a first material stacked on the forming member layer by layer to form the three-dimensional base structure. The second material supply module provides a second material filled in the cavity of the three-dimensional base structure to obtain the composite additive structure. The second material can be filled in the three-dimensional base structure using three filling strategies: local filling, layer filling and global filling.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 20, 2023
    Inventors: Jeng-Ywan Jeng, Mayur Jiyalal Prajapati, Ajeet Kumar
  • Publication number: 20230080633
    Abstract: The present invention provides a bottom plate of a resin tank for three-dimensional printing, which is manufactured through the following steps: substrate surface roughening step: treating the upper surface of a transparent substrate by using a plasma, or disposing a composite film on the upper surface of the transparent substrate to form a non-smooth surface structure having pores; substrate surface modification step: sequentially performing an activation treatment and a fluorination treatment on the upper surface of the transparent substrate; and stabilizer filling step: applying a stabilizer to the upper surface of the transparent substrate to fill the stabilizer penetrates into the pores on the upper surface of the transparent substrate. The low surface energy film reduces the adhesion of the hardened photosensitive material, and the stabilizer maintains the structure of the low surface energy film, so that the resin tank bottom plate has both oleophobic and hydrophobic properties.
    Type: Application
    Filed: March 10, 2022
    Publication date: March 16, 2023
    Inventors: Jeng-Ywan Jeng, Ming-Hua Ho, Ping-Hsun Tsai
  • Publication number: 20220381311
    Abstract: A wave spring unit comprising a plurality of annular wave-spring elements stacked vertically along an axial direction, which is characterized in that each of the annular wave spring elements of the wave spring unit comprises crest portion and trough portion formed alternately in a horizontal axial direction; said crest portion and trough portion of adjacent vertically annular wave spring elements are positioned opposite each other; said adjacent vertically annular wave spring elements have the same or different from each other in at least one physical parameter selected form a strip thickness, a strip diameter, a strip weight, strip shape, wave contact number, edge shape, overall shape of the spring and a combination of wave and helical spring; and the wave spring unit has a maximum compression up to 30.2 mm and is capable of bearing load up to 2680.2 N.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 1, 2022
    Inventors: Jeng-Ywan Jeng, Aamer Nazir, Muhammad Rizwan ul Haq
  • Patent number: 11457694
    Abstract: A invention disclosed a bio-mimicked three-dimensional laminated structure at least comprising a flexible lattice structure, which is characterized in that the flexible lattice structure comprises a plurality of particle units are uniformly disposed and evenly distributed in the X-axis, the Y-axis, and the Z-axis direction and evenly distributed as a lattice matrix of an array grid in an identical plane; wherein each of the particle units is an opened hollow shell or a close shell. The design eliminates the need for support structures and the subsequent post-processing required to remove them. A shell-shaped close cell bio-mimicked three-dimensional laminated structure bio-mimicking a sea urchin shape was introduced for the load-bearing structure application.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: October 4, 2022
    Assignee: National Taiwan University of Science and Technology
    Inventors: Ajeet Kumar, Jeng-Ywan Jeng, Yun-Peng Yeh
  • Publication number: 20220220328
    Abstract: The present invention provides a method for 3D inkjet printing, which comprises: a preheating step: an external heating source is used to heat a main body layer composed of a first composition to a first temperature, wherein the main body layer has a thickness of 10 ?m to 500 ?m and a unit density of 0.1 to 1.0 g/cm3, and the first temperature is less than the melting point of the first composition; a heating step: a second composition is applied to the surface of the first composition at the first temperature of the composite to proceed an exothermic cross-linking polymerization, so that the main body layer is heated to a second temperature to become a molten state; and a cooling step: the main body layer in the molten state is cooled down and solidified to form.
    Type: Application
    Filed: June 30, 2021
    Publication date: July 14, 2022
    Inventors: Chorng-Shyan Chern, Jeng-Ywan Jeng, Ya-Ting Chang, Cheng-Che Lu
  • Patent number: 11339922
    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: May 24, 2022
    Assignee: National Taiwan University of Science and Technology
    Inventors: Saurav Verma, Jeng-Ywan Jeng, Ajeet Kumar
  • Publication number: 20220142297
    Abstract: A shoe midsole having a structure formed by additive manufacturing process, including a bottom pad, an upper pad and a shock-absorbing layer. The bottom pad has foot-shaped profile and includes a plurality of stress zones. The upper pad is arranged opposite to the bottom pad and has foot-shaped profile almost identical to that of the bottom pad. The shock-absorbing layer is arranged between the bottom pad and the upper pad and includes a plurality of pressure-bearing units. The pressure-bearing unit is arranged between the bottom pad and the upper pad in the manner that two ends of each pressure-bearing unit abut against the bottom pad and the upper pad respectively. The pressure-bearing unit has excellent mechanical properties such as higher energy absorption and force bearing capacity for bearing pressures or stress put by the foot, good flexibility and higher deflection capacity that can be elastically deformed in the longitudinal direction.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 12, 2022
    Inventors: Aamer Nazir, Jeng-Ywan Jeng, Mubasher Ali
  • Publication number: 20220096220
    Abstract: An intelligent tooth health-care system and an intelligent tooth cleaning device thereof. The intelligent tooth cleaning device includes a plurality of sensors capable of detecting conditions of mouth and teeth of a user. The user may obtain data relating to his/her health when he/she cleans the teeth. The sensors also detect the movement of the intelligent tooth cleaning device. The data of movement are transmitted to a mobile device and input to a computer tooth-cleaning game executed in the mobile device, whereby the user is guided by the computer tooth-cleaning game to clean his/her teeth. The data obtained by the sensors can also be transmitted to a server in the cloud for health analysis.
    Type: Application
    Filed: April 9, 2021
    Publication date: March 31, 2022
    Inventors: Jeng-Ywan Jeng, Guan-Syun Wu, I-An Chen, Azam Hamza
  • Patent number: 11280073
    Abstract: A smart faucet equipment providing water for washing and sanitizing liquid for dry hand wash. A user may activate different sensors to provide different liquid according to their requirement. The smart faucet equipment of the invention provides water or sanitizing liquid according to the sensors activated by the user. The smart faucet equipment of the invention provides control scheme of regulation of the time period for providing water or sanitizing liquid according to the user's requirement, whereby the user may wash his/her hands without manual operation.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: March 22, 2022
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jeng-Ywan Jeng, Aamer Nazir, Yeabsra Mekdim Hailu
  • Publication number: 20220010927
    Abstract: The proposed lattice structure is designed to simplify the time of long and difficult post-printing process of removing the unused powder or resin by blowing air in the additive manufacturing parts. The designed lattice structure is a ventilated three dimensional structure that includes a plurality of lattice bodies arranged in a first direction, a second direction and a third direction. The first direction, the second direction and the third direction are orthogonal. Each of the lattice body has a hollow structure formed by a shell wall including a first venting hole opening in the first direction and facing the first venting hole of another adjacent lattice body, a second venting hole opening in the second direction and facing the second venting hole of another adjacent lattice body; and a third venting hole opening in the third direction and facing the third venting hole of another adjacent lattice body.
    Type: Application
    Filed: July 9, 2020
    Publication date: January 13, 2022
    Inventors: Saurav Verma, Jeng-Ywan Jeng, Ajeet Kumar
  • Publication number: 20210186152
    Abstract: A invention disclosed a bio-mimicked three-dimensional laminated structure at least comprising a flexible lattice structure, which is characterized in that the flexible lattice structure comprises a plurality of particle units are uniformly disposed and evenly distributed in the X-axis, the Y-axis, and the Z-axis direction and evenly distributed as a lattice matrix of an array grid in an identical plane; wherein each of the particle units is an opened hollow shell or a close shell. The design eliminates the need for support structures and the subsequent post-processing required to remove them. A shell-shaped close cell bio-mimicked three-dimensional laminated structure bio-mimicking a sea urchin shape was introduced for the load-bearing structure application.
    Type: Application
    Filed: October 28, 2020
    Publication date: June 24, 2021
    Inventors: Ajeet Kumar, Jeng-Ywan Jeng, Yun-Peng Yeh