Patents by Inventor Keng-Ming Chang
Keng-Ming 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: 11731998Abstract: Provided is a method of preparing ferric carboxymaltose with weight average molecular weight between 100,000 and 400,000. The method includes reacting an oxidized maltodextrin solid with an iron (III) salt solution in acidic and basic conditions in sequence to afford ferric carboxymaltose, wherein the oxidized maltodextrin solid has a dextrose equivalent of less than 4. The ferric carboxymaltose prepared by the method can withstand high-temperature sterilization with high stability and facilitate storage.Type: GrantFiled: January 20, 2022Date of Patent: August 22, 2023Assignee: FORMOSA LABORATORIES, INCInventors: Rung-Tian Suen, Yao-Ting Wang, Keng-Ming Chang, Ming-Kuang Hsu
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Publication number: 20230052476Abstract: Provided is a method of preparing ferric carboxymaltose with weight average molecular weight between 100,000 and 400,000. The method includes reacting an oxidized maltodextrin solid with an iron (III) salt solution in acidic and basic conditions in sequence to afford ferric carboxymaltose, wherein the oxidized maltodextrin solid has a dextrose equivalent of less than 4. The ferric carboxymaltose prepared by the method can withstand high-temperature sterilization with high stability and facilitate storage.Type: ApplicationFiled: January 20, 2022Publication date: February 16, 2023Applicant: FORMOSA LABORATORIES, INCInventors: Rung-Tian SUEN, Yao-Ting WANG, Keng-Ming CHANG, Ming-Kuang HSU
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Patent number: 11142082Abstract: A linear transmission device with capability of wireless power supply includes a transmission mechanism and a wireless power supply module. The transmission mechanism includes a long shaft part and a moving part. The long shaft part defines an axis. The moving part is disposed on the long shaft part in a manner that the moving part is movable along the axis. The wireless power supply module includes a magnet-providing part disposed on the long shaft part for providing a magnetic field and an induction coil disposed on the moving part. A direction of the magnetic field is parallel to the axis. A normal vector of the induction coil is parallel to the direction of the magnetic field. When the moving part is moved along the axis, a current is induced in the induction coil through variation of the magnetic field.Type: GrantFiled: August 7, 2019Date of Patent: October 12, 2021Assignee: HIWIN TECHNOLOGIES CORP.Inventors: Keng-Ming Chang, Yu-Wei Chuang, Meng-Ying Lin, Chun-Yen Wu
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Patent number: 11068031Abstract: An example stand assembly is described, which may include a first support feature extending from a rear end of a first housing of an electronic device and a second support feature extending from a rear end of a second housing of the electronic device. The first housing and the second housing may be rotatable relative to one another between an open position and a closed position of the electronic device. The first support feature may have a first curved shape. The second support feature may have a second curved shape in a direction opposite to the first curved shape. The first support feature and the second support feature may facilitate the electronic device to stand vertically in the closed position.Type: GrantFiled: March 13, 2018Date of Patent: July 20, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Keng-Ming Chang, Hsin-Tsung Ho, Chi-Chun Chiang
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Publication number: 20210173433Abstract: An example stand assembly is described, which may include a first support feature extending from a rear end of a first housing of an electronic device and a second support feature extending from a rear end of a second housing of the electronic device. The first housing and the second housing may be rotatable relative to one another between an open position and a closed position of the electronic device. The first support feature may have a first curved shape. The second support feature may have a second curved shape in a direction opposite to the first curved shape. The first support feature and the second support feature may facilitate the electronic device to stand vertically in the closed position.Type: ApplicationFiled: March 13, 2018Publication date: June 10, 2021Inventors: KENG-MING CHANG, HSIN-TSUNG HO, CHI-CHUN CHIANG
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Publication number: 20210039512Abstract: A linear transmission device with capability of wireless power supply includes a transmission mechanism and a wireless power supply module. The transmission mechanism includes a long shaft part and a moving part. The long shaft part defines an axis. The moving part is disposed on the long shaft part in a manner that the moving part is movable along the axis. The wireless power supply module includes a magnet-providing part disposed on the long shaft part for providing a magnetic field and an induction coil disposed on the moving part. A direction of the magnetic field is parallel to the axis. A normal vector of the induction coil is parallel to the direction of the magnetic field. When the moving part is moved along the axis, a current is induced in the induction coil through variation of the magnetic field.Type: ApplicationFiled: August 7, 2019Publication date: February 11, 2021Inventors: Keng-Ming Chang, Yu-Wei Chuang, Meng-Ying Lin, Chun-Yen Wu
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Patent number: 10832101Abstract: The present subject matter describes an electronic card holder. In an example implementation, the electronic card holder includes a housing having a slot to receive an electronic card. A slidable frame in the housing is to hold the electronic card. The slidable frame has a stud fittable in a groove in the housing. The card holder includes a resilient element with one end being coupled to the housing and other end being coupled to the slidable frame. The card holder further includes an actuating member coupled to the groove. When the electronic card is pushed inside the housing, the slidable frame is moved to lock the stud inside the groove and compress the resilient element. When the actuating member is pushed, the stud is released from the groove and the resilient element is relaxed to move the slidable frame such that the electronic card is pushed out of the housing.Type: GrantFiled: July 29, 2016Date of Patent: November 10, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hsin-Tsung Ho, Chia-Ming Tsai, Keng-Ming Chang
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Patent number: 10693259Abstract: In an example, a connector port assembly for use in an electronic device is disclosed. The connector port assembly may include a connector port, a fastener assembly and a flexible ring. The fastener assembly may fasten the connector port to a casing of the electronic device through at least one resilient member. The flexible ring may be disposed around an outer surface of the connector port. The fastener assembly and flexible ring may provide bend angle for the connector port.Type: GrantFiled: July 29, 2016Date of Patent: June 23, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hsin-Tsung Ho, Chia-Ming Tsai, Keng-Ming Chang
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Publication number: 20190205709Abstract: The present subject matter describes an electronic card holder. In an example implementation, the electronic card holder includes a housing having a slot to receive an electronic card. A slidable frame in the housing is to hold the electronic card. The slidable frame has a stud fittable in a groove in the housing. The card holder includes a resilient element with one end being coupled to the housing and other end being coupled to the slidable frame. The card holder further includes an actuating member coupled to the groove. When the electronic card is pushed inside the housing, the slidable frame is moved to lock the stud inside the groove and compress the resilient element. When the actuating member is pushed, the stud is released from the groove and the resilient element is relaxed to move the slidable frame such that the electronic card is pushed out of the housing.Type: ApplicationFiled: July 29, 2016Publication date: July 4, 2019Inventors: Hsin-Tsung Ho, CHiA-MiNG TSAI, KENG-MING CHANG
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Publication number: 20190190205Abstract: In an example, a connector port assembly for use in an electronic device is disclosed. The connector port assembly may include a connector port, a fastener assembly and a flexible ring. The fastener assembly may fasten the connector port to a casing of the electronic device through at least one resilient member. The flexible ring may be disposed around an outer surface of the connector port. The fastener assembly and flexible ring may provide bend angle for the connector port.Type: ApplicationFiled: July 29, 2016Publication date: June 20, 2019Inventors: HSIN-TSUNG HO, CHIA-MING TSAI, KENG-MING CHANG
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Publication number: 20140378929Abstract: A hydrophilic dressing including a base layer, a hydrophilic dressing layer and an anti-sticking layer is provided. The hydrophilic dressing layer is disposed on the base layer. The anti-sticking layer covers on a part of the hydrophilic dressing layer. While the hydrophilic dressing layer absorbs a great amount of exudate from wound, the anti-sticking layer of the hydrophilic dressing can separate avalanched hydrophilic dressing from skin. Therefore, when the hydrophilic dressing is removed, the avalanched hydrophilic dressing would not remain on the skin.Type: ApplicationFiled: August 21, 2013Publication date: December 25, 2014Applicant: Tatung CompanyInventors: Tsui-Shan Hung, Keng-Ming Chang
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Patent number: 8106886Abstract: A mouse includes a body, and a scanner. The body includes a first surface, an opposite second surface, and a recess defined in the second surface. The scanner received in the recess includes a housing defining a scanning window, an optical scanning unit received in the housing and an imaging sensor package. The optical scanning unit includes a light source for emitting light through the scanning window towards an object to be scanned, a reflector for reflecting light from the object, and a lens module for focusing the reflected light from the object. The imaging sensor package is received in the housing and is configured for receiving the focused light and generating image data associated with the object.Type: GrantFiled: September 23, 2008Date of Patent: January 31, 2012Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 8078222Abstract: A portable electronic device includes a first main body, an audio processor mounted in the main body, a camera module mounted in the main body, and an earphone signal connected with the first main body. A first input-output port disposed on the main body is coupled with the audio processor and the camera module. The earphone includes a second main body, and a second input-output port coupled to the second main body to facilitate audio signal transmissions between the audio processor and the earphone and output control signals from the earphone to the camera module.Type: GrantFiled: July 22, 2008Date of Patent: December 13, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 8002999Abstract: An exemplary stamper includes molding portions arranged in an array. Each of the molding portions includes a central optical molding portion and an annular peripheral molding portion surrounding the central optical molding portion. Each molding portion is capable of facilitating formation of a respective optical article. A surface roughness of the annular peripheral molding portion is larger than a predetermined wavelength of light. The predetermined wavelength is selected according to a wavelength of light that is expected to be incident on the optical article when the optical article is in use.Type: GrantFiled: April 28, 2009Date of Patent: August 23, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 7980848Abstract: A mold for molding a lens includes a first mold part and a second mold part. The first mold part includes a substantially frustoconical guiding chamber defined therein, and a first molding surface in the substantially frustoconical guiding chamber. The second mold part includes a main body having a substantially frustoconical protrusion with a substantially cylindrical recess defined therein. The substantially frustoconical protrusion has a second molding surface in the substantially cylindrical recess. The substantially frustoconical protrusion is configured for inserting into and matingly engaged in the substantially frustoconical guiding chamber of the first mold part, thus aligning the first molding surface with the second molding surface.Type: GrantFiled: December 9, 2008Date of Patent: July 19, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 7926303Abstract: A mold apparatus includes a first mold die, a second mold die and an interjacent mold die. The first mold die has a first molding surface. The second mold die has a second molding surface. The interjacent mold die is arranged between the first and second mold dies, and has a third molding surface and an opposite fourth molding surface. The third molding surface and the first molding surface cooperatively form a first molding chamber. The fourth molding surface and the second molding surface cooperatively forms a second molding chamber.Type: GrantFiled: July 30, 2008Date of Patent: April 19, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 7859775Abstract: An exemplary lens module includes a lens barrel having a cavity defined therein and a groove defined in an inner sidewall thereof, and a deformable light blocking plate engaged in the groove of the lens barrel. The groove surrounds a central axis of the lens barrel. The deformable light blocking plate defines a central through hole therein for light passing therethrough.Type: GrantFiled: November 9, 2009Date of Patent: December 28, 2010Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Patent number: 7819593Abstract: A lens module includes a lens, a lens module and a base. The lens barrel receives the lens therein. The lens barrel includes a hollow cylindrical body, a beveled distal end and a flange. The hollow cylindrical body includes a smooth peripheral side surface free of thread formed thereon. The flange extends outwardly from the cylindrical body. The flange defines an annular groove in a peripheral surface thereof. The base includes a hollow cylindrical holding body coaxially receiving the cylindrical body therein. The holding body has a first distal end, a second distal end and an inner smooth surface. The beveled distal end is configured for facilitating insertion of the cylindrical body in the cylindrical holding body. The flange is configured for being clamped by a tool and being moved toward or away from the base using the tool.Type: GrantFiled: October 15, 2008Date of Patent: October 26, 2010Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang
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Publication number: 20100259840Abstract: An exemplary lens module includes a lens barrel having a cavity defined therein and a groove defined in an inner sidewall thereof, and a deformable light blocking plate engaged in the groove of the lens barrel. The groove surrounds a central axis of the lens barrel. The deformable light blocking plate defines a central through hole therein for light passing therethrough.Type: ApplicationFiled: November 9, 2009Publication date: October 14, 2010Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: KENG-MING CHANG
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Patent number: 7755856Abstract: A lens module includes a first lens. The first lens includes a first central round portion and a first peripheral portion. The first peripheral portion has a first radially extending portion surrounding the first central round portion, and a first axially extending portion extending axially from the first radially extending portion. The first radially extending portion comprises a first surface. The first axially extending portion comprises a first cylindrical side surface and a second side surface. The first cylindrical side surface is interconnected between the second side surface and the first surface. The first cylindrical side surface is coaxially aligned with a principal axis of the first central round portion and the second side surface is inclined relative to the principal axis of the central round portion.Type: GrantFiled: October 15, 2008Date of Patent: July 13, 2010Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Keng-Ming Chang