Patents by Inventor Ray Chang

Ray 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: 10245570
    Abstract: A multi-channel magnetic control system is provided, which is used for mixing fluids containing magnetic particles or separating magnetic species. In the multi-channel magnetic control system, a plurality of magnetic field switches are allocated to surround a plurality of channels, and the magnetization directions of the magnetic field switches are controlled to generate an uneven local magnetic field gradient, so as to achieve the purpose of fluid mixing or separating the magnetic species. This system can be also used as controllable flow resistance devices for magnetic fluids. Based on the demand of magnetic field distribution, overall or local control of the magnetic field switches can be executed to perform parallel processing over the multi-channel system of multi-dimensional allocation, so as to effectively save the processing time. The mixing or separation rate can be obtained via detecting residual magnetic species by magnetoresistive sensors arranged in inlets and outlets of channels.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 2, 2019
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Zung-Hang Wei, Jen-Hwa Hsu, Ching-Ray Chang, Hao-Ting Huang
  • Patent number: 9709640
    Abstract: A single bridge magnetic field sensor includes a fluxguide mounted to a surface of a substrate. A bridge unit includes first, second, third, and fourth magnetoresistive elements mounted around the fluxguide and mounted on the surface of the substrate. A switching circuit is electrically connected to two voltage inputs, two grounding terminals, two voltage output terminals, and the four magnetoresistive elements. The switching circuit can proceed with circuit switching according to a magnetic field in each axis direction to be measured, thereby changing electrical connection between the voltage inputs, the grounding terminals, the voltage output terminals, and the four magnetoresistive elements. A measuring unit is electrically connected to the two voltage output terminals and the four magnetoresistive elements.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 18, 2017
    Assignee: National Taiwan University
    Inventors: Ching-Ray Chang, Jen-Tzong Jeng, Jen-Hwa Hsu, Chih-Cheng Lu, Bor-Lin Lai, Van-Su Luong
  • Patent number: 9625537
    Abstract: The present invention discloses a magnetic field sensing device and method. The magnetic field sensing device includes a pinned layer with a first magnetization direction, an analyzer with a second magnetization direction, wherein the first and the second magnetization directions form an angle, and a sensing layer of magnetic material, located between the analyzer and the pinned layer. The magnetic field sensing method includes: providing a pinned layer with a first magnetization direction, providing an analyzer with a second magnetization direction, wherein the first and the second magnetization directions form an angle, and providing a sensing layer of magnetic material, located between the analyzer and the pinned layer.
    Type: Grant
    Filed: November 29, 2014
    Date of Patent: April 18, 2017
    Inventors: Jui-Hang Chang, Ching-Ray Chang
  • Publication number: 20170080435
    Abstract: A multi-channel magnetic control system is provided, which is used for mixing fluids containing magnetic particles or separating magnetic species. In the multi-channel magnetic control system, a plurality of magnetic field switches are allocated to surround a plurality of channels, and the magnetization directions of the magnetic field switches are controlled to generate an uneven local magnetic field gradient, so as to achieve the purpose of fluid mixing or separating the magnetic species. This system can be also used as controllable flow resistance devices for magnetic fluids. Based on the demand of magnetic field distribution, overall or local control of the magnetic field switches can be executed to perform parallel processing over the multi-channel system of multi-dimensional allocation, so as to effectively save the processing time. The mixing or separation rate can be obtained via detecting residual magnetic species by magnetoresistive sensors arranged in inlets and outlets of channels.
    Type: Application
    Filed: January 28, 2016
    Publication date: March 23, 2017
    Inventors: ZUNG-HANG WEI, JEN-HWA HSU, CHING-RAY CHANG, HAO-TING HUANG
  • Publication number: 20170059668
    Abstract: A single bridge magnetic field sensor includes a fluxguide mounted to a surface of a substrate. A bridge unit includes first, second, third, and fourth magnetoresistive elements mounted around the fluxguide and mounted on the surface of the substrate. A switching circuit is electrically connected to two voltage inputs, two grounding terminals, two voltage output terminals, and the four magnetoresistive elements. The switching circuit can proceed with circuit switching according to a magnetic field in each axis direction to be measured, thereby changing electrical connection between the voltage inputs, the grounding terminals, the voltage output terminals, and the four magnetoresistive elements. A measuring unit is electrically connected to the two voltage output terminals and the four magnetoresistive elements.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 2, 2017
    Inventors: CHING-RAY CHANG, JEN-TZONG JENG, JEN-HWA HSU, CHIH-CHENG LU, BOR-LIN LAI, VAN-SU LUONG
  • Patent number: 9541527
    Abstract: A magnetic device with a three-dimensional wave structure is provided, which contains magnetic elements and a signal receiver. The magnetic element is nano/micron structure with magnetic anisotropy. The magnetic element is formed on a substrate with three-dimensional wave structure. When a magnetic substance approaches to the magnetic element, the magnetic substance produces a corresponding magnetoresistance signal for the magnetic element. Through the measurement of the magnetoresistance of the three-dimensional wave structure, and the presence or absence of the magnetic substance can be detected. An external magnetic field is used to change the magnetization configuration of the three-dimensional wave structure to capture the magnetic substance by adsorbing the magnetic substance to a magnetic pole of the three-dimensional wave structure.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: January 10, 2017
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Zung-Hang Wei, Jen-Hwa Hsu, Ching-Ray Chang, Hao-Ting Huang
  • Publication number: 20150153426
    Abstract: The present invention discloses a magnetic field sensing device and method. The magnetic field sensing device includes a pinned layer with a first magnetization direction, an analyzer with a second magnetization direction, wherein the first and the second magnetization directions form an angle, and a sensing layer of magnetic material, located between the analyzer and the pinned layer. The magnetic field sensing method includes: providing a pinned layer with a first magnetization direction, providing an analyzer with a second magnetization direction, wherein the first and the second magnetization directions form an angle, and providing a sensing layer of magnetic material, located between the analyzer and the pinned layer.
    Type: Application
    Filed: November 29, 2014
    Publication date: June 4, 2015
    Inventors: Jui-Hang Chang, Ching-Ray Chang
  • Publication number: 20150021995
    Abstract: Methods and apparatus for dynamically adjusting the amount of power (or current) distributed to one or more connected devices via electrical interfaces. In one embodiment, the apparatus comprises a first module adapted to detect current drawn by a first set of ports, and a second module adapted to adjust the current provided to a second set of ports based on the detected current. The second module is also optionally adapted to distribute unreserved current among the devices according to an allocation protocol. In the exemplary context of a plurality of interconnected serial bus devices, the invention enables a device to draw more current than that required to be reserved for that device (such as to comply with a specification such as USB), yet without increasing the total amount of power which must be dedicated to the serial ports as a whole. Power supply efficiency may also be advantageously optimized.
    Type: Application
    Filed: May 6, 2014
    Publication date: January 22, 2015
    Inventors: RAY CHANG, David Ferguson
  • Publication number: 20140273605
    Abstract: A connector includes a casing, a circuit board, a joint and an adapter. The casing has an accommodating space. The circuit board, located in the accommodating space, has multiple conductive contacts. The joint, assembled on the casing, is electrically connected to the circuit board. The adapter module, detachably assembled in the accommodating space, includes a first body, a second body and multiple piercing terminals. The first body has multiple insertion slots. The second body is combined with the first body. The multiple piercing terminals, located on the second body, correspond to the insertion slots and are electrically connected to the multiple conductive contacts.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: TELEBOX INDUSTRIES CORP.
    Inventors: Ray CHANG, Fu-Wen WU, Chien-Ming TU, Chang-Huang LEE
  • Publication number: 20140256165
    Abstract: A connector includes a lower casing, a circuit board, a connecting head, multiple puncturing terminals, an upper casing and an upper lid. The lower casing includes a base and at least one support pole provided on the base. The base has an accommodating slot. The circuit board disposed in the accommodating slot. The connecting head is disposed on the base, and is electrically connected to the circuit board. The puncturing terminals are disposed on the circuit board. The upper casing includes a casing body, a cantilever structure extending from one side of the casing body and a cable holder located on the cantilever structure. The upper lid is disposed on the upper casing body. The upper lid has a release position and an open position relative to the casing body.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: TELEBOX INDUSTRIES CORP.
    Inventors: Ray CHANG, Fu-Wen WU, Chien-Ming TU, Eric JENG
  • Patent number: 8719601
    Abstract: Methods and apparatus for dynamically adjusting the amount of power (or current) distributed to one or more connected devices via electrical interfaces. In one embodiment, the apparatus comprises a first module adapted to detect current drawn by a first set of ports, and a second module adapted to adjust the current provided to a second set of ports based on the detected current. The second module is also optionally adapted to distribute unreserved current among the devices according to an allocation protocol. In the exemplary context of a plurality of interconnected serial bus devices, the invention enables a device to draw more current than that required to be reserved for that device (such as to comply with a specification such as USB), yet without increasing the total amount of power which must be dedicated to the serial ports as a whole. Power supply efficiency may also be advantageously optimized.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: May 6, 2014
    Assignee: Apple Inc.
    Inventors: Ray Chang, David Ferguson
  • Publication number: 20140062470
    Abstract: A three-dimensional (3D) in-plane magnetic sensor includes a first magnetic sensor, a second magnetic sensor, a third magnetic sensor and a circuit. The first magnetic sensor, second magnetic sensor and third magnetic sensor are installed on a same plane to measure the magnetic field component of first direction, second direction and third direction, where the third direction is perpendicular to the first and second direction. The third magnetic sensor includes a third fixed layer, a third magnetic insulating layer and a third free layer. The magnetoresistance of the third free layer is an intermediate value in the spontaneous magnetization direction, and is varied when interfered by an external magnetic field. In short, the 3D in-plane magnetic sensor is manufactured with semiconductor processing which does not require vertical adhesion, and also bring the benefits of improved production capacity, prolonged product life, reduced manufacturing cost and time.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Inventors: Meng-Huang Lai, Fu-Te Yuan, Hai-Tao Pan, Jen-Hwa Hsu, Ching-Ray Chang
  • Patent number: 8624073
    Abstract: Non-basic and non-acidic homogeneous catalysts organo-metallic compound of the formula: M(OCH3)x wherein M is B, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Al, Sn, Sb, Mo, Ag, and Cd and x is an integer from 2, 3 or 4 can catalyze transesterification of oils and fats having high free fatty acid content and with an acid number from 0.5 to 20, into biodiesel. B(OCH3)3 and Ge(OCH3)4, having low boiling points, are easily recovered from the biodiesel and glycerol phases and recycled for reuse. Continuous biodiesel production with the novel homogenous catalysts is achieved without the complicated and troublesome steps attendant with conventional processes using base or acid homogeneous catalyst. The high purity biodiesel is produced without acid-base neutralization, water wash, filtration, and solid disposal steps for removing the spent catalyst from the product streams associated with prior techniques.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: January 7, 2014
    Assignee: CPC Corporation, Taiwan
    Inventors: Shih-Chieh Yang, Jen-Ray Chang, Maw-Tien Lee, Tzong-Bin Lin, Fu-Ming Lee, Cheng-Tsung Hong, Jeng-Cheng Lee
  • Patent number: 8536253
    Abstract: Catalytic partial oxidation using a metal oxide catalyst surface treats crumb rubber that is recovered from waste rubber tires. Advantages of using catalytically oxidized crumb rubber relative to using non-catalytically oxidized crumb rubber in making the rubberized concrete, includes superior mechanical strength and water-repealing capability, lower oxidation temperature and shorter oxidation time, and accelerated hydration times. Rubber oil (a gas condensate) co-produced from the crumb rubber partial oxidation process is equal to or better than the commercial superplasticizers. Industrial scale partial oxidation employs a continuous flow tubular reactor where a crumb rubber/catalyst mixture is fed into the reactor co-currently with an air/nitrogen mixture.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: September 17, 2013
    Assignee: Chun Well Industry Co. Ltd.
    Inventors: Kuo-Ji Yen, Maw-Tien Lee, Shou-Ming Lee, Jen-Ray Chang, Liang-Hsign Chou
  • Patent number: 8536239
    Abstract: Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: September 17, 2013
    Assignee: Chun Well Industry Co. Ltd.
    Inventors: Kuo-Ji Yen, Maw-Tien Lee, Liang-Hsign Chou, Jen-Ray Chang, Cho-Kun Yang
  • Publication number: 20130073758
    Abstract: Methods and apparatus for dynamically adjusting the amount of power (or current) distributed to one or more connected devices via electrical interfaces. In one embodiment, the apparatus comprises a first module adapted to detect current drawn by a first set of ports, and a second module adapted to adjust the current provided to a second set of ports based on the detected current. The second module is also optionally adapted to distribute unreserved current among the devices according to an allocation protocol. In the exemplary context of a plurality of interconnected serial bus devices, the invention enables a device to draw more current than that required to be reserved for that device (such as to comply with a specification such as USB), yet without increasing the total amount of power which must be dedicated to the serial ports as a whole. Power supply efficiency may also be advantageously optimized.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 21, 2013
    Inventors: Ray CHANG, David FERGUSON
  • Patent number: 8338506
    Abstract: Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber and a gas condensate which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The gas condensate co-produced in the partial oxidation reactor consists of mainly active sulfur oxides (R—SOx—R) and serves as an excellent bonding agent to further enhance the bonding strength between the partially oxidized rubber particles and the cement mixes. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: December 25, 2012
    Assignee: Chun Well Industry Co., Ltd.
    Inventors: Kuo-Ji Yen, Maw-Tien Lee, Liang-Hsign Chou, Jen-Ray Chang
  • Patent number: 8337637
    Abstract: A method for ordering a disordered alloy includes: simultaneously ion bombarding and annealing a disordered alloy to transform the disordered alloy from a disordered crystalline state to an ordered crystalline state. A method for making a perpendicular magnetic recording medium which includes an ordered alloy layer is also disclosed.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: December 25, 2012
    Assignee: National Taiwan University
    Inventors: Fu-Te Yuan, An-Cheng Sun, Jen-Hwa Hsu, Ching-Ray Chang
  • Publication number: 20120252910
    Abstract: Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber and a gas condensate which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The gas condensate co-produced in the partial oxidation reactor consists of mainly active sulfur oxides (R—SOx—R) and serves as an excellent bonding agent to further enhance the bonding strength between the partially oxidized rubber particles and the cement mixes. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: Chun Well Industry Co., Ltd.
    Inventors: Kuo-Ji Yen, Maw-Tien Lee, Liang-Hsign Chou, Jen-Ray Chang
  • Patent number: 8266456
    Abstract: Methods and apparatus for dynamically adjusting the amount of power (or current) distributed to one or more connected devices via electrical interfaces. In one embodiment, the apparatus comprises a first module adapted to detect current drawn by a first set of ports, and a second module adapted to adjust the current provided to a second set of ports based on the detected current. The second module is also optionally adapted to distribute unreserved current among the devices according to an allocation protocol. In the exemplary context of a plurality of interconnected serial bus devices, the invention enables a device to draw more current than that required to be reserved for that device (such as to comply with a specification such as USB), yet without increasing the total amount of power which must be dedicated to the serial ports as a whole. Power supply efficiency may also be advantageously optimized.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: September 11, 2012
    Assignee: Apple Inc.
    Inventors: Ray Chang, David Ferguson