Patents by Inventor Jean Chang

Jean 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).

  • Publication number: 20200399795
    Abstract: A method of generating a coiled actuator fiber that includes twisting a fiber to generate a twisted fiber; wrapping the twisted fiber around a core yarn or fiber to generate a coil in the twisted fiber, which generates a coiled twisted fiber; setting the coiled twisted fiber by heat or chemical treatment; and removing at least a portion of the core yarn or fiber to generate a coiled actuator fiber.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 24, 2020
    Inventors: Brent Ridley, Jean Chang, Shara Maikranz
  • Patent number: 10793981
    Abstract: An adaptive sheet that includes a first layer defining a first length, the first layer configured to assume a base configuration in response to a first environmental condition and assume a lofted configuration in response to a second environmental condition with the first layer being curled along the first length compared the base configuration. The first fabric layer includes a first material defining a second length and having a first expansion coefficient, and wherein the first material is configured to increasingly change length along the second length in response to the second environmental condition, and a second material defining a third length and having a second expansion coefficient that is different than the first expansion coefficient.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 6, 2020
    Assignee: OTHER LAB, LLC
    Inventors: Brent Ridley, Saul Griffith, Shara Maikranz, Jean Chang, Pete Lynn
  • Patent number: 10793979
    Abstract: A system and method of generating a coiled actuator fiber. The method includes twisting a fiber to generate a twisted fiber, wrapping the twisted fiber around a core to generate a coil in the twisted fiber; and removing at least a portion of the core to generate a coiled actuator fiber. In some aspects that fiber can be a yarn with one or more fibers or a fiber comprising a single elongated element. In some aspects, a portion of the core includes a removable sacrificial portion. The removable sacrificial portion can be dissolvable in a solvent or physically removable. In some aspects, the core further includes a non-dissolvable portion that is not dissolvable and generating a coiled actuator can include removing the sacrificial portion by treating a twisted fiber on the core to remove the sacrificial portion and leaving the non-dissolvable portion.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 6, 2020
    Assignee: OTHER LAB, LLC
    Inventors: Brent Ridley, Jean Chang, Shara Maikranz
  • Publication number: 20190269188
    Abstract: A thermally adaptive material configured to assume a lofted configuration and flat configuration in response to different temperatures. The thermally adaptive material includes an adaptive first textile layer with one or more sections of a first material that has a first thermal expansion coefficient and one or more sections of a second material disposed adjacent to the one or more sections of the first material, the one or more sections of the second material having a second thermal expansion coefficient that is different from the first thermal expansion coefficient. The thermally adaptive material also includes a second textile layer disposed opposing the adaptive first textile layer; a plurality of engaging portions between the first textile layer and second textile layer; and one or more cavities defined by the first and second layers that are generated while the adaptive textile is at least in a lofted configuration.
    Type: Application
    Filed: March 5, 2019
    Publication date: September 5, 2019
    Inventors: Brent Ridley, Jean Chang, Leah Bryson
  • Publication number: 20180291535
    Abstract: A system and method of generating a coiled actuator fiber. The method includes twisting a fiber to generate a twisted fiber, wrapping the twisted fiber around a core to generate a coil in the twisted fiber; and removing at least a portion of the core to generate a coiled actuator fiber. In some aspects that fiber can be a yarn with one or more fibers or a fiber comprising a single elongated element. In some aspects, a portion of the core includes a removable sacrificial portion. The removable sacrificial portion can be dissolvable in a solvent or physically removable. In some aspects, the core further includes a non-dissolvable portion that is not dissolvable and generating a coiled actuator can include removing the sacrificial portion by treating a twisted fiber on the core to remove the sacrificial portion and leaving the non-dissolvable portion.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 11, 2018
    Inventors: Brent Ridley, Jean Chang, Shara Maikranz
  • Publication number: 20160340814
    Abstract: An adaptive sheet that includes a first layer defining a first length, the first layer configured to assume a base configuration in response to a first environmental condition and assume a lofted configuration in response to a second environmental condition with the first layer being curled along the first length compared the base configuration. The first fabric layer includes a first material defining a second length and having a first expansion coefficient, and wherein the first material is configured to increasingly change length along the second length in response to the second environmental condition, and a second material defining a third length and having a second expansion coefficient that is different than the first expansion coefficient.
    Type: Application
    Filed: May 20, 2016
    Publication date: November 24, 2016
    Inventors: Brent Ridley, Saul Griffith, Shara Maikranz, Jean Chang, Pete Lynn
  • Publication number: 20160258667
    Abstract: A dry instant cold pack includes approximately 50 g-55 g raw chemical fill materials contained in a pouch having a water filling nozzle. The raw chemical fill material is preferably ammonium nitrate, calcium ammonium nitrate (CAN) or urea, and the bag or pouch is preferably made of PE or PE Nylon. The dry instant cold pack has lower manufacturing cost and is easy to carry, transport and store. To activate and use, the user simply adds some water through water filling nozzle to produce a cooling effect within 30 seconds. The one-way nozzle prevents the water from flowing back out of the pouch.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 8, 2016
    Inventors: Jeff Kruckman, Jean Chang
  • Patent number: 7931665
    Abstract: A filter system for temporary placement of a filter in an artery or vein is disclosed. The filter system includes a guidewire that is first positioned across a lesion within a vessel. The guidewire may include a distal stop. A slideable filter is then advanced along the guidewire using an advancing mechanism, typically an elongate member slideable over the guidewire and contacting the filter. A capture sheath may be disposed about the filter during advancement. Once the filter is positioned downstream of the lesion, the capture sheath is withdrawn, allowing the filter to expand. Further distal advancement of the filter is prohibited by the stop. After expansion of the filter, the capture sheath and the advancing mechanism are withdrawn from the region of interest, and removed from the patient's vessel. The filter may then be retrieved using a capture sheath or exchanged for a second filter after removing the first filter.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: April 26, 2011
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Ross Tsugita, Jean Chang
  • Patent number: 7717935
    Abstract: A filter system for temporary placement of a filter in an artery or vein is disclosed. The filter system includes a guidewire that is first positioned across a lesion within a vessel. The guidewire may include a distal stop. A slideable filter is then advanced along the guidewire using an advancing mechanism, typically an elongate member slideable over the guidewire and contacting the filter. A capture sheath may be disposed about the filter during advancement. Once the filter is positioned downstream of the lesion, the capture sheath is withdrawn, allowing the filter to expand. Further distal advancement of the filter is prohibited by the stop. After expansion of the filter, the capture sheath and the advancing mechanism are withdrawn from the region of interest, and removed from the patient's vessel. The filter may then be retrieved using a capture sheath or exchanged for a second filter after removing the first filter.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: May 18, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Ross Tsugita, Jean Chang
  • Patent number: 7554939
    Abstract: The invention implements specialized resource functions (SRFs) associated with wireless intelligent network (WIN) in a mobile switch center (MSC) of a wireless network. In one aspect, the invention provides a method for handling SRFs associated with WIN in an MSC of a wireless network. In another embodiment of the method, the invention provides a method for handling SRFs in an MSC of a wireless network, wherein the wireless network includes the MSC and a service control point (SCP) in communication with the MSC. In still another aspect, the invention provides an MSC for a wireless network that includes: a switch service function (SSF) process, an SRF process, an SSF/SRF interface, and an SCP interface.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: June 30, 2009
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Yi Zhou, Jean Chang, Frances Mu-Fen Chin, Seongwoon Kim, Ismael Lopez, Jr., Yu Yin
  • Publication number: 20080045999
    Abstract: A filter system for temporary placement of a filter in an artery or vein is disclosed. The filter system includes a guidewire that is first positioned across a lesion within a vessel. The guidewire may include a distal stop. A slideable filter is then advanced along the guidewire using an advancing mechanism, typically an elongate member slideable over the guidewire and contacting the filter. A capture sheath may be disposed about the filter during advancement. Once the filter is positioned downstream of the lesion, the capture sheath is withdrawn, allowing the filter to expand. Further distal advancement of the filter is prohibited by the stop. After expansion of the filter, the capture sheath and the advancing mechanism are withdrawn from the region of interest, and removed from the patient's vessel. The filter may then be retrieved using a capture sheath or exchanged for a second filter after removing the first filter.
    Type: Application
    Filed: October 24, 2007
    Publication date: February 21, 2008
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Ross Tsugita, Jean Chang
  • Publication number: 20070073379
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 29, 2007
    Inventor: Jean Chang
  • Patent number: 7179714
    Abstract: There is provided a method of fabricating a MOS transistor having a fully silicided gate, including forming a gate pattern and gate spacers on a semiconductor substrate, the gate pattern including a lower gate pattern, an insulating layer pattern, and an upper gate pattern, which are sequentially stacked. Source/drain regions are formed by implanting impurity ions into an active region using the gate pattern and the gate spacers as ion implantation masks. Then, a protecting layer is formed on the semiconductor substrate having the gate pattern, and the protecting layer is planarized until the upper gate pattern is exposed. Then, by removing the exposed upper gate pattern and the insulating layer pattern, the lower gate pattern is exposed. Then, the protecting layer is selectively removed, thereby exposing the source/drain regions. The exposed lower gate pattern is fully converted to a gate silicide layer, and a silicide layer is concurrently formed on the surfaces of the source/drain regions.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: February 20, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: You-Jean Chang, Myoung-Hwan Oh, Hee-Sung Kang, Choong-Ryul Ryou
  • Publication number: 20070027522
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures.
    Type: Application
    Filed: May 22, 2006
    Publication date: February 1, 2007
    Inventors: Jean Chang, Sudip Pandya
  • Publication number: 20060161730
    Abstract: An apparatus, system, and method are disclosed for enforcing policy controls for non-system managed tape media. The apparatus includes an operating system configured to communicate with a tape media drive, and an identification module configured to identify a tape media type of a tape media cartridge. The apparatus may also include a policy module configured to maintain control policies for tape media types, and a media control module configured to enforce the control policies. The system includes a computing system having a processor, a cache, an operating system, and a plurality of input/output interfaces, a tape media drive coupled to the computing system, and the apparatus. The method includes communicating with a tape media drive, identifying a tape media type of a tape media cartridge, maintaining a plurality of control policies for tape media types, and enforcing the plurality of control policies.
    Type: Application
    Filed: January 18, 2005
    Publication date: July 20, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jean Chang, Erika Dawson, Jon Lynds, Michael Noel, Linda Schiltz, Michael Wood
  • Publication number: 20060041304
    Abstract: A catheter system comprising a guidewire, an endovascular catheter, and an aspiration catheter. The guidewire has an expandable occluder mounted on a distal end. The guidewire and the endovascular catheter are insertable into a lumen of the aspiration catheter. The aspiration catheter also includes infusion and aspiration lumen(s) and port(s). Methods of using the catheter system for treating a vascular lesion and removing embolic material during the procedure are also disclosed.
    Type: Application
    Filed: September 6, 2005
    Publication date: February 23, 2006
    Inventors: Yue-Teh Jang, Ross Tsugita, Bruce Addis, Tracy Maahs, Jean Chang
  • Publication number: 20060015139
    Abstract: A filter system for temporary placement of a filter in an artery or vein is disclosed. The filter system includes a guidewire that is first positioned across a lesion within a vessel. The guidewire may include a distal stop. A slideable filter is then advanced along the guidewire using an advancing mechanism, typically an elongate member slideable over the guidewire and contacting the filter. A capture sheath may be disposed about the filter during advancement. Once the filter is positioned downstream of the lesion, the capture sheath is withdrawn, allowing the filter to expand. Further distal advancement of the filter is prohibited by the stop. After expansion of the filter, the capture sheath and the advancing mechanism are withdrawn from the region of interest, and removed from the patient's vessel. The filter may then be retrieved using a capture sheath or exchanged for a second filter after removing the first filter.
    Type: Application
    Filed: August 5, 2005
    Publication date: January 19, 2006
    Inventors: Ross Tsugita, Jean Chang
  • Publication number: 20050209672
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures. For such purposes, a self-expanding stent may be deployed in connection with an angioplasty procedure with a sliding restraint based delivery system adapted for simplified use. In the system, the sliding restraint is sized, in coordination with a fixed sleeve accepting a core wire to actuate the restraint to effect an anchoring function with the sleeve so that the stent is not inadvertently advanced during deployment.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 22, 2005
    Inventors: William George, Jean Chang, Dai Ton, Nicholas De Beer, Julian Nikolchev, Frank Becking
  • Publication number: 20050191833
    Abstract: There is provided a method of fabricating a MOS transistor having a fully silicided gate, including forming a gate pattern and gate spacers on a semiconductor substrate, the gate pattern including a lower gate pattern, an insulating layer pattern, and an upper gate pattern, which are sequentially stacked. Source/drain regions are formed by implanting impurity ions into an active region using the gate pattern and the gate spacers as ion implantation masks. Then, a protecting layer is formed on the semiconductor substrate having the gate pattern, and the protecting layer is planarized until the upper gate pattern is exposed. Then, by removing the exposed upper gate pattern and the insulating layer pattern, the lower gate pattern is exposed. Then, the protecting layer is selectively removed, thereby exposing the source/drain regions. The exposed lower gate pattern is fully converted to a gate silicide layer, and a silicide layer is concurrently formed on the surfaces of the source/drain regions.
    Type: Application
    Filed: February 24, 2005
    Publication date: September 1, 2005
    Inventors: You-Jean Chang, Myoung-Hwan Oh, Hee-Sung Kang, Choong-Ryul Ryou
  • Publication number: 20050154189
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a human CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind human CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Application
    Filed: June 21, 2002
    Publication date: July 14, 2005
    Inventors: Juha Punnonen, Alexandra Lazetic, Steven Leong, Jean Chang, Doris Apt, Claes Gustafsson