Patents by Inventor David W. Chang

David W. 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: 7895576
    Abstract: An embodiment of the present invention relates to a method that provides for an effective way of creating and maintaining test scripts. In this regard, the application under test (AUT) software objects are abstracted in a mapping, verification points (VP) are created, and actions are scripted. The mapping is independent of the language. Objects in the scripts are mapped to the actual objects in the application under test (AUT). The actions are scripted once and then run on any language (internationalization testing—i.e. English, Chinese, German, etc.). In addition, verification points (VP) can be extracted from an application under test (AUT). The baseline text (translations) can be displayed for review. The tester can then verify baseline translations, as will seen by an end user and or identify any missing baseline translations.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: February 22, 2011
    Assignee: International Business Machines Corporation
    Inventors: David W. Chang, William E. Malloy
  • Patent number: 7879011
    Abstract: Described herein are methods and devices for selectively applying fluids (particularly anesthetics) to a target tissue from within a blood vessel while minimizing the amount of fluid applied to non-target tissue. The injection catheters described herein may include an elongate body, a directional injector, and one or more holdfasts for securing the catheter before extending the injector. The methods of selectively applying anesthetic to a target structure generally include the steps of inserting an injection catheter into a body vessel, positioning the injection catheter within the body vessel near the target structure, anchoring the injection catheter before extending a directional injector from the injection catheter, and applying anesthetic from the injection catheter to the target structure.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: February 1, 2011
    Assignee: Silk Road Medical, Inc.
    Inventor: David W. Chang
  • Publication number: 20100191170
    Abstract: One disclosed embodiment comprises a method for treating lesions in the carotid artery of a mammalian body. The method comprises transcervical access and blocking of blood flow through the common carotid artery (with or without blocking of blood flow through the external carotid artery), shunting blood from the internal carotid artery and treating the lesion in the carotid artery.
    Type: Application
    Filed: April 1, 2010
    Publication date: July 29, 2010
    Inventor: David W. Chang
  • Publication number: 20100191169
    Abstract: One disclosed embodiment comprises a method for treating lesions in the carotid artery of a mammalian body. The method comprises transcervical access and blocking of blood flow through the common carotid artery (with or without blocking of blood flow through the external carotid artery), shunting blood from the internal carotid artery and treating the lesion in the carotid artery.
    Type: Application
    Filed: April 1, 2010
    Publication date: July 29, 2010
    Inventor: David W. Chang
  • Publication number: 20100094988
    Abstract: Provided are techniques for monitoring information. In response to a database process starting, a monitoring agent is loaded under control of the database process, wherein the monitoring agent invokes a discovery service to discover a central server and monitoring service. Under control of the monitoring agent, monitor information about the database process is sent to the central server and monitoring service.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 15, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: David W. Chang, Holger Karn, Bilung Lee, Paul Arnold Ostler
  • Patent number: 7657940
    Abstract: A data center provides secure handling of HTTPS traffic using backend SSL decryption and encryption in combination with a load balancer such as a content switch. The load balancer detects HTTPS traffic and redirects it to an SSL offloading device for decryption and return to the load balancer. The load balancer then uses the clear text traffic for load balancing purposes before it redirects the traffic back to the SSL offloading device for re-encryption. Thereafter, the re-encrypted traffic is sent to the destination servers in the data center. In one embodiment, the combination with the back-end SSL with an intrusion detection system improves security by performing intrusion detection on the decrypted HTTPS traffic.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: February 2, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Maurizio Portolani, Mauricio Arregoces, David W. Chang, Nagaraj A. Bagepalli, Stefano Testa
  • Publication number: 20090018455
    Abstract: One disclosed embodiment comprises a method for treating lesions in the carotid artery of a mammalian body. The method comprises transcervical access and blocking of blood flow through the common carotid artery (with or without blocking of blood flow through the external carotid artery), shunting blood from the internal carotid artery and treating the lesion in the carotid artery.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 15, 2009
    Inventor: David W. Chang
  • Publication number: 20080243080
    Abstract: A method and apparatus is described that facilitates appropriate placement of a closure device and allows ease of placement with repeated access without bleeding. A suitable biocompatible polymer diaphragm such as silicone or nipple is place on the adventitia of the vessel through a small cutdown incision. The puncture surface is a diaphragm that functions as a self-sealing valve. For embodiments designed for small catheter access such as 4 to 9 Fr, this may be a polymer that elastically seals around the puncture once the catheter is removed. Especially for larger access catheters, such as 10 French to 24 French, a preformed aperture or slit may be cut into the material, allowing controlled and atraumatic penetration of the device and artery. The sealing element may also be fixed to the outside wall of the vessel with holdfasts through a method that facilitates percutaneous delivery through the use of a guiding wire.
    Type: Application
    Filed: May 16, 2008
    Publication date: October 2, 2008
    Inventor: David W. Chang
  • Publication number: 20080115111
    Abstract: An embodiment of the present invention relates to a method that provides for an effective way of creating and maintaining test scripts. In this regard, the application under test (AUT) software objects are abstracted in a mapping, verification points (VP) are created, and actions are scripted. The mapping is independent of the language. Objects in the scripts are mapped to the actual objects in the application under test (AUT). The actions are scripted once and then run on any language (internationalization testing—i.e. English, Chinese, German, etc.). In addition, verification points (VP) can be extracted from an application under test (AUT). The baseline text (translations) can be displayed for review. The tester can then verify baseline translations, as will seen by an end user and or identify any missing baseline translations.
    Type: Application
    Filed: November 10, 2006
    Publication date: May 15, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: David W. Chang, William E. Malloy
  • Patent number: 5752966
    Abstract: An anastomotic device includes a flexible member, formable into a loop and a plurality of tissue penetrating anchoring elements slidably mounted on the flexible member. The tissue penetrating anchoring elements extend generally towards a center of the loop formed by the flexible member. The device is adapted for anastomosing vessel segments or a vessel and a graft. In a further embodiment, an exovascular anastomotic device is suitable for end-to-side anastomoses and it includes an anastomotic ring and a harness assembly.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: May 19, 1998
    Inventor: David W. Chang