Patents by Inventor Chih-Han Chang
Chih-Han 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: 12271237Abstract: A foldable electronic device includes a first body having an end and a first inclined surface, a second body having a second inclined surface, and a hinge module. The end includes an accommodating area. A virtual shaft line exists between sides of the first inclined surface and the second inclined surface that are closest to each other. The second body rotates relative to the first body through the virtual shaft line. The hinge module includes a first bracket adjacent to the first inclined surface, connected to the first body, and located in the accommodating area, a second bracket adjacent to the second inclined surface and connected to the second body, and a third bracket including a first end and a second end. The first bracket is connected to the first end through a first torsion assembly. The second bracket is connected to the second end through a second torsion assembly.Type: GrantFiled: April 27, 2023Date of Patent: April 8, 2025Assignee: ASUSTek COMPUTER INC.Inventors: Chih-Han Chang, Tsung-Ju Chiang, Chi-Hung Lin, Yen-Ting Liu
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Publication number: 20240077914Abstract: A foldable electronic device includes a first body having an end and a first inclined surface, a second body having a second inclined surface, and a hinge module. The end includes an accommodating area. A virtual shaft line exists between sides of the first inclined surface and the second inclined surface that are closest to each other. The second body rotates relative to the first body through the virtual shaft line. The hinge module includes a first bracket adjacent to the first inclined surface, connected to the first body, and located in the accommodating area, a second bracket adjacent to the second inclined surface and connected to the second body, and a third bracket including a first end and a second end. The first bracket is connected to the first end through a first torsion assembly. The second bracket is connected to the second end through a second torsion assembly.Type: ApplicationFiled: April 27, 2023Publication date: March 7, 2024Applicant: ASUSTeK COMPUTER INC.Inventors: Chih-Han Chang, Tsung-Ju Chiang, Chi-Hung Lin, Yen-Ting Liu
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Publication number: 20240033166Abstract: A rehabilitation device includes a base unit, a circuit unit, a rolling unit, and a holding unit. The circuit unit includes a distance measuring element, which is partially exposed on a bottom surface of the base unit and can measure the moving distance of the base unit after the base unit contacts a plane. The rolling unit includes a plurality of rollers partially protruding from the base unit, a driving member, and at least one auxiliary wheel driven by the driving member. The rollers are continuously in contact with the plane, and the auxiliary wheel is driven to contact the plane. The rollers can make the base unit slide, allowing the user to stretch their upper limbs by themselves. When the user moves to his own limit position, the auxiliary wheel can be driven to gradually increase the moving distance of the base unit, so that the upper limb can be continuously stretched, and the limit of the extension distance and joint movement angle of the upper limb can be gradually increased.Type: ApplicationFiled: June 9, 2023Publication date: February 1, 2024Inventors: Yao-Lung Kuo, Chih-Han Chang, Li-Chieh Kuo, Kang-Chin Yang, Yu-Chen Lin, Ping-Han Chuang
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Patent number: 11006879Abstract: A urinary bladder irrigation device includes: a first pipe, a second pipe, a third pipe, a liquid supply member, a liquid collection member, a detection member, and an elevation member. The first pipe has a first opening at one end thereof. The second pipe has a second opening at one end thereof. The third pipe has an end connected to another end of the first pipe and another end of the second pipe and has a third opening at another end thereof. The liquid supply member is connected to the first opening. The liquid collection member is connected to the second opening. The detection member is positioned in the second pipe. The elevation member accommodates the detection member.Type: GrantFiled: January 24, 2019Date of Patent: May 18, 2021Assignee: NATIONAL CHENG KUNG UNIVERSITYInventors: Chen-Hsun Weng, Ming-Chien Hung, Wen-Horng Yang, Chien-Hui Ou, Ming-Huang Chen, Chih-Han Chang
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Publication number: 20190223776Abstract: A urinary bladder irrigation device includes: a first pipe, a second pipe, a third pipe, a liquid supply member, a liquid collection member, a detection member, and an elevation member. The first pipe has a first opening at one end thereof. The second pipe has a second opening at one end thereof. The third pipe has an end connected to another end of the first pipe and another end of the second pipe and has a third opening at another end thereof. The liquid supply member is connected to the first opening. The liquid collection member is connected to the second opening. The detection member is positioned in the second pipe. The elevation member accommodates the detection member.Type: ApplicationFiled: January 24, 2019Publication date: July 25, 2019Inventors: Chen-Hsun Weng, Ming-Chien Hung, Wen-Horng Yang, Chien-Hui Ou, Ming-Huang Chen, Chih-Han Chang
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Publication number: 20160015271Abstract: The present invention relates to a palpation diagnostic device, which comprises an optical pressure sensor embedded in a holder; wherein the optical pressure sensor is an optical fiber sensor, or a micro-fabricated waveguide sensor to be disposed on a finger or a palm; and the optical pressure sensor is configured to receive an optical signal whose intensity is attenuated when a force is applied on the optical pressure sensors. Therefore, the palpation diagnostic device of the present invention can provide high sensing sensitivity by attenuating the intensity of the optical signal in the optical pressure sensors which a force is applied on, so it can provide precise and immediate information based on quantitative feedback for the users.Type: ApplicationFiled: July 18, 2014Publication date: January 21, 2016Inventors: Wei-Chih WANG, Chih-Han CHANG, Fong-Chin SU, David LINDERS
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Patent number: 9198873Abstract: The present invention relates to a new type of functionalized nanoparticles for drug delivery, comprising a type of polymer nanoparticles, a polymer stabilizer coating, and a drug, wherein said polymer stabilizer coating is coated on the surface of said type of polymer nanoparticles, and said drug is conjugated to said polymer stabilizer coating. The present invention also relates to a method for preparing the nanoparticles; and provides a method for treating an ischemic or degenerative disease, comprising administrating an effective amount of the type of functionalized nanoparticles to a subject.Type: GrantFiled: July 19, 2010Date of Patent: December 1, 2015Assignee: NATIONAL CHENG KUNG UNIVERSITYInventors: Patrick C. H. Hsieh, Min-Feng Cheng, Chih Han Chang, Wei-Yin Liao
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Publication number: 20150085293Abstract: A portable optical tomography design for performing elastographic deformation mapping of tissues comprises a coherence light source providing one light beam; a scanning microscope comprising a waveguide having two terminals, a coupler disposed on one terminal, an actuating member connected to the waveguide or the coupler, a first optical reflection member, a beam splitter, and a Fourier-domain spectrometer. The waveguide is actuated by the actuator to traverse a horizontal and vertical motion to prescribe a two-dimensional plane for scanning the tissue sample. Optical fiber is used to connect above elements therebetween. The Fourier-domain spectrometer is coupled with the beam splitter and comprises a second reflection member and an interferogram capturing member. An interferogram produced from the Fourier-domain spectrometer is carried over to a digital signal processor and subsequently an optical coherence tomography image device to generate a three-dimensional image for the scanned tissue.Type: ApplicationFiled: September 26, 2013Publication date: March 26, 2015Applicant: National Cheng Kung UniversityInventors: Wei-Chih WANG, Chih-Han CHANG, Fong-Chin SU
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Patent number: 8911482Abstract: An interlocking bone plate system includes an outer bone plate for being arranged outside a broken bone, an inner bone plate for being installed inside the medullary cavity of the broken bone, and screws for being inserted through and engaged with the outer bone plate and the broken bone and then engaged with the inner bone plate so as to interlock the out and inner bone plates together. The inner bone plate provides an added support in addition to the support provided by the outer bone plate, enhancing the structural strength of the whole bone fixation structure and lowering the risk of failed surgery.Type: GrantFiled: March 13, 2012Date of Patent: December 16, 2014Assignee: Taichung Veterans General HospitalInventors: Cheng-Hung Lee, Chih-Han Chang, Chih-Kun Hsiao, Kui-Chou Huang, Chih-Hui Chen
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Patent number: 8830475Abstract: Disclosed is an interferometer comprising a light source, a reflective element, and a photodetector. The light source is configured to emit a light beam, and an angle is formed by inclusion between a direction to which the light beam travels and the reflective element, the photodetector is configured to be substantially perpendicular to the reflective element. The light beam is halved into a first light beam propagating by the included angle, and a second light beam reflected off the reflective element, the first light beam and the second light beam interfere each other to form an interferogram on the photodetector, which detects the interferogram. By benefit of above, the interferometer does not need to reposition its parts in order to make adjustment to interferogram, thereby simplifying optical element setup and minimizing physical volume of the interferomger. Also disclosed is a spectrometer including the same interferometer and a Fourier-transform-capable analyzer.Type: GrantFiled: August 19, 2013Date of Patent: September 9, 2014Assignee: National Cheng Kung UniversityInventors: Wei-Chih Wang, Benjamin Estroff, Chih-Han Chang, Fong-Chin Su
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Patent number: 8625195Abstract: An objective-type dark-field illumination device for a microfluidic channel is provided and includes an optical stop having a pair of symmetric curved slits used to adjust the optical path and inner numerical aperture of a dark-field light source generated by the device. The dark-field illumination can focus on a smaller spot to illuminate a sample in the microfluidic channel by matching a pin-hole combined with a transmitter objective lens. The optical path and smaller spot is advantageous to solve the problem of a traditional dark-field illumination that may generate background light noise scattered from inner walls of the microfluidic channel to lower the image contrast. Therefore, the signal or image resolution of capturing the scattered light and/or emitted fluorescent light emitted from the sample in the microfluidic channel can be enhanced. Meanwhile, the device can simultaneously excite and detect multiple fluorescent samples with different excited wavelengths in the microfluidic channel.Type: GrantFiled: August 5, 2010Date of Patent: January 7, 2014Assignee: National Sun Yat-Sen UniversityInventors: Che-hsin Lin, Shi-wei Lin, Jui-hung Hsu, Chih-han Chang
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Publication number: 20130096630Abstract: An interlocking bone plate system includes an outer bone plate for being arranged outside a broken bone, an inner bone plate for being installed inside the medullary cavity of the broken bone, and screws for being inserted through and engaged with the outer bone plate and the broken bone and then engaged with the inner bone plate so as to interlock the out and inner bone plates together. The inner bone plate provides an added support in addition to the support provided by the outer bone plate, enhancing the structural strength of the whole bone fixation structure and lowering the risk of failed surgery.Type: ApplicationFiled: March 13, 2012Publication date: April 18, 2013Inventors: Cheng-Hung LEE, Chih-Han Chang, Chih-Kun Hsiao, Kui-Chou Huang, Chih-Hui Chen
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Patent number: 8348869Abstract: An upper limbs rehabilitation device includes a main body, a rail, a movable member and a grip, wherein the main body has a first link and a second link pivotably connected to the first link. The rail is connected to the second link. The user holds the grip that is pivotably connected to the movable member and swings the upper limb to move the movable member along the rail so as to exercise the upper limb in multiple degrees of freedom.Type: GrantFiled: August 4, 2010Date of Patent: January 8, 2013Assignee: SU, Fong-ChinInventors: Fong-Chin Su, Wei-Jr Lin, Chih-Han Chang, Li-Chieh Kuo, Cheng-Chun Chen, Chung-Ying Tsai
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Publication number: 20120035512Abstract: An upper limbs rehabilitation device includes a main body, a rail, a movable member and a grip, wherein the main body has a first link and a second link pivotably connected to the first link. The rail is connected to the second link. The user holds the grip that is pivotably connected to the movable member and swings the upper limb to move the movable member along the rail so as to exercise the upper limb in multiple degrees of freedom.Type: ApplicationFiled: August 4, 2010Publication date: February 9, 2012Inventors: Fong-Chin SU, Wei-Jr Lin, Chih-Han Chang, Li-Chieh Kuo, Cheng-Chun Chen, Chung-Ying Tsai
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Publication number: 20120015037Abstract: The present invention relates to a new type of functionalized nanoparticles for drug delivery, comprising a type of polymer nanoparticles, a polymer stabilizer coating, and a drug, wherein said polymer stabilizer coating is coated on the surface of said type of polymer nanoparticles, and said drug is conjugated to said polymer stabilizer coating. The present invention also relates to a method for preparing the nanoparticles; and provides a method for treating an ischemic or degenerative disease, comprising administrating an effective amount of the type of functionalized nanoparticles to a subject.Type: ApplicationFiled: July 19, 2010Publication date: January 19, 2012Applicant: National Cheng Kuang UniversityInventors: Patrick C.H. HSIEH, Min-Feng CHENG, Chih Han CHANG, Wei-Yin LIAO
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Publication number: 20110157692Abstract: An objective-type dark-field illumination device for a microfluidic channel is provided and includes an optical stop having a pair of symmetric curved slits used to adjust the optical path and inner numerical aperture of a dark-field light source generated by the device. The dark-field illumination can focus on a smaller spot to illuminate a sample in the microfluidic channel by matching a pin-hole combined with a transmitter objective lens. The optical path and smaller spot is advantageous to solve the problem of a traditional dark-field illumination that may generate background light noise scattered from inner walls of the microfluidic channel to lower the image contrast. Therefore, the signal or image resolution of capturing the scattered light and/or emitted fluorescent light emitted from the sample in the microfluidic channel can be enhanced. Meanwhile, the device can simultaneously excite and detect multiple fluorescent samples with different excited wavelengths in the microfluidic channel.Type: ApplicationFiled: August 5, 2010Publication date: June 30, 2011Applicant: National Sun Yat-Sen UniversityInventors: CHE-HSIN LIN, Shi-wei Lin, Jui-hung Hsu, Chih-han Chang
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Patent number: 7232718Abstract: A method for forming a deep trench capacitor buried plate. A substrate having a pad oxide and a pad nitride is provided. A deep trench is formed in the substrate. A doped silicate film is deposited on a sidewall of the deep trench. A sacrificial layer is deposited in the deep trench, and etched back to expose parts of the doped silicate film. Then, an etching process is performed to remove the exposed doped silicate film and parts of the pad oxide for forming a recess. The sacrificial layer is removed. A silicon nitride layer is deposited to fill the recess and to cover the doped silicate film. Finally, a thermal oxidation process is performed to form a doped ion region. The silicon nitride layer is removed. The doped silicate film is removed.Type: GrantFiled: September 17, 2003Date of Patent: June 19, 2007Assignee: Nanya Technology Corp.Inventors: Chih-Han Chang, Hsin-Jung Ho, Chang-Rong Wu, Chien-Jung Sun
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Publication number: 20050059207Abstract: A method for forming a deep trench capacitor buried plate. A substrate having a pad oxide and a pad nitride is provided. A deep trench is formed in the substrate. A doped silicate film is deposited on a sidewall of the deep trench. A sacrificial layer is deposited in the deep trench, and etched back to expose parts of the doped silicate film. Then, an etching process is performed to remove the exposed doped silicate film and parts of the pad oxide for forming a recess. The sacrificial layer is removed. A silicon nitride layer is deposited to fill the recess and to cover the doped silicate film. Finally, a thermal oxidation process is performed to form a doped ion region. The silicon nitride layer is removed. The doped silicate film is removed.Type: ApplicationFiled: September 17, 2003Publication date: March 17, 2005Inventors: Chih-Han Chang, Hsin-Jung Ho, Chang-Rong Wu, Chien-Jung Sun
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Patent number: 6537872Abstract: A method of fabricating a capacitor of a DRAM cell. First, an insulating layer is formed on the semiconductor substrate at the top portion of the trench. Afterward, a seed layer on the ringed insulating layer and the semiconductor substrate at the bottom portion of the trench. A photoresist is coated in the trench at the bottom portion. Next, the seed layer is partially removed to expose the ringed insulating layer while the photoresist is used as the shield. The photoresist is then removed to expose the remaining seed layer at the bottom portion. A hemispherical silicon grain layer is deposited from the remaining seed layer on the semiconductor substrate. Ions are doped the hemispherical silicon grain layer and the semiconductor substrate so as to create a doped area to serve as the lower electrode of the capacitor.Type: GrantFiled: April 19, 2002Date of Patent: March 25, 2003Assignee: Nanya Technology CorporationInventors: Li-Wu Tsao, Chih-Han Chang
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Patent number: 6365506Abstract: This invention relates to a dual damascene process with porous low-k dielectric material. A first insulating layer is formed on a porous low-k dielectric layer. The first insulating layer has a first pattern for defining a first opening in the low-k dielectric layer. Also, the invention includes the step of forming a second insulating layer on the first insulating layer. Both the first insulating layer and the second insulating layer are used as a hard mask, the two insulating layers being of different materials. The second insulating layer has a second pattern for defining a second opening in the low-k dielectric layer. Then, at least one etch is performed to form a dual damascene structure in the porous low-k dielectric layer by the different insulating layers which cause different protection time in etching the porous low-k dielectric layer.Type: GrantFiled: May 17, 2001Date of Patent: April 2, 2002Assignee: Nanya Technology CorporationInventors: Chih-Han Chang, Hsin-Chuan Tsai