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).

  • Patent number: 11731998
    Abstract: 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: Grant
    Filed: January 20, 2022
    Date of Patent: August 22, 2023
    Assignee: FORMOSA LABORATORIES, INC
    Inventors: Rung-Tian Suen, Yao-Ting Wang, Keng-Ming Chang, Ming-Kuang Hsu
  • Publication number: 20230052476
    Abstract: 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: Application
    Filed: January 20, 2022
    Publication date: February 16, 2023
    Applicant: FORMOSA LABORATORIES, INC
    Inventors: Rung-Tian SUEN, Yao-Ting WANG, Keng-Ming CHANG, Ming-Kuang HSU
  • Patent number: 11142082
    Abstract: 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: Grant
    Filed: August 7, 2019
    Date of Patent: October 12, 2021
    Assignee: HIWIN TECHNOLOGIES CORP.
    Inventors: Keng-Ming Chang, Yu-Wei Chuang, Meng-Ying Lin, Chun-Yen Wu
  • Patent number: 11068031
    Abstract: 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: Grant
    Filed: March 13, 2018
    Date of Patent: July 20, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keng-Ming Chang, Hsin-Tsung Ho, Chi-Chun Chiang
  • Publication number: 20210173433
    Abstract: 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: Application
    Filed: March 13, 2018
    Publication date: June 10, 2021
    Inventors: KENG-MING CHANG, HSIN-TSUNG HO, CHI-CHUN CHIANG
  • Publication number: 20210039512
    Abstract: 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: Application
    Filed: August 7, 2019
    Publication date: February 11, 2021
    Inventors: Keng-Ming Chang, Yu-Wei Chuang, Meng-Ying Lin, Chun-Yen Wu
  • Patent number: 10832101
    Abstract: 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: Grant
    Filed: July 29, 2016
    Date of Patent: November 10, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Hsin-Tsung Ho, Chia-Ming Tsai, Keng-Ming Chang
  • Patent number: 10693259
    Abstract: 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: Grant
    Filed: July 29, 2016
    Date of Patent: June 23, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Hsin-Tsung Ho, Chia-Ming Tsai, Keng-Ming Chang
  • Publication number: 20190205709
    Abstract: 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: Application
    Filed: July 29, 2016
    Publication date: July 4, 2019
    Inventors: Hsin-Tsung Ho, CHiA-MiNG TSAI, KENG-MING CHANG
  • Publication number: 20190190205
    Abstract: 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: Application
    Filed: July 29, 2016
    Publication date: June 20, 2019
    Inventors: HSIN-TSUNG HO, CHIA-MING TSAI, KENG-MING CHANG
  • Publication number: 20140378929
    Abstract: 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: Application
    Filed: August 21, 2013
    Publication date: December 25, 2014
    Applicant: Tatung Company
    Inventors: Tsui-Shan Hung, Keng-Ming Chang
  • Patent number: 8106886
    Abstract: 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: Grant
    Filed: September 23, 2008
    Date of Patent: January 31, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 8078222
    Abstract: 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: Grant
    Filed: July 22, 2008
    Date of Patent: December 13, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 8002999
    Abstract: 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: Grant
    Filed: April 28, 2009
    Date of Patent: August 23, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 7980848
    Abstract: 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: Grant
    Filed: December 9, 2008
    Date of Patent: July 19, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 7926303
    Abstract: 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: Grant
    Filed: July 30, 2008
    Date of Patent: April 19, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 7859775
    Abstract: 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: Grant
    Filed: November 9, 2009
    Date of Patent: December 28, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Patent number: 7819593
    Abstract: 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: Grant
    Filed: October 15, 2008
    Date of Patent: October 26, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang
  • Publication number: 20100259840
    Abstract: 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: Application
    Filed: November 9, 2009
    Publication date: October 14, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: KENG-MING CHANG
  • Patent number: 7755856
    Abstract: 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: Grant
    Filed: October 15, 2008
    Date of Patent: July 13, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Keng-Ming Chang