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: 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
  • Publication number: 20050050055
    Abstract: An apparatus, system, and method are presented for scaling storage media to improve data access performance. A scaling module is provided and configured to receive a dataset, identify storage characteristics of the dataset, make a determination based upon user-defined storage criteria, and select a storage instruction. In one embodiment, the storage instruction is configured to scale the storage medium to a predefined capacity. The predefined capacity of the storage medium is configured to optimize data access performance. Alternatively, the storage instruction is configured to not scale the storage medium. Additionally, the present invention may be configured to map and track the storage medium while the dataset is being written to or read from the storage medium.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Jean Chang, Kirby Dahman, Erika Dawson, Stanley Kissinger, Gavin Johnson, Jon Lynds, Michael Noel, Linda Schiltz
  • Publication number: 20040174837
    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: Application
    Filed: March 7, 2003
    Publication date: September 9, 2004
    Inventors: Yi Zhou, Jean Chang, Frances Mu-Fen Chin, Seongwoon Kim, Ismael Lopez, Yu Yin
  • Publication number: 20030190697
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind 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 22, 2001
    Publication date: October 9, 2003
    Inventors: Juha Punnonen, Alexandra L.L. Lazetic, Steven R. Leong, Chia-Chun Jean Chang, Doris Apt, Claes Gustafsson
  • Publication number: 20020183782
    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: February 15, 2002
    Publication date: December 5, 2002
    Applicant: SciMed Life Systems, Inc.
    Inventors: Ross Tsugita, Jean Chang
  • Publication number: 20020095174
    Abstract: A filter system for temporary placement of a filter in an artery or vein. 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: February 22, 2002
    Publication date: July 18, 2002
    Applicant: SCIMED LIFE SYSTEMS, INC.
    Inventors: Ross Tsugita, Jean Chang
  • Patent number: 6371971
    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: April 28, 2000
    Date of Patent: April 16, 2002
    Assignee: SciMed Life Systems, Inc.
    Inventors: Ross Tsugita, Jean Chang