Patents by Inventor Robert Chang

Robert 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: 7448603
    Abstract: A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: November 11, 2008
    Assignee: Hydrocarbon Technologies Innovation Group, Inc.
    Inventors: Thomas Kao, Robert Chang
  • Patent number: 7449155
    Abstract: A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: November 11, 2008
    Assignee: Hydrocarbon Technologies Innovation Group, Inc.
    Inventors: Thomas Kao, Robert Chang
  • Patent number: 7370847
    Abstract: A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 13, 2008
    Assignee: Hydrocarbon Technologies Innovation Group, Inc.
    Inventors: Thomas Kao, Robert Chang
  • Publication number: 20080091264
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: September 21, 2007
    Publication date: April 17, 2008
    Inventors: Timothy Machold, Robert Chang, David Rahdert, David Scott, David Tholfsen
  • Publication number: 20080091059
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial adjustability and retrievability years after implant. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize an adjustable bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: September 21, 2007
    Publication date: April 17, 2008
    Inventors: Timothy Machold, David Scott, David Rahdert, David Tholfsen, Robert Chang
  • Patent number: 7350962
    Abstract: A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: April 1, 2008
    Assignee: Hydrocarbon Technologies Innovation Group, Inc.
    Inventors: Thomas Kao, Robert Chang
  • Publication number: 20080065204
    Abstract: An implant for supplementing, repairing, or replacing a native heart valve leaflet or leaflets provides a scaffold, which defines a pseudo-annulus. The implant further has at least two struts in generally oppositely spaced apart positions on the scaffold. The scaffold can be placed in an elastically loaded condition in a heart with the struts engaging tissue at or near the leaflet commissures of a heart valve annulus, to reshape the annulus for leaflet coaptation. The implant further provides a neoleaflet element coupled to the scaffold within pseudo-annulus, to provide a one-way valve function.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 13, 2008
    Inventors: John Macoviak, Robert Chang, David Rahdert, Timothy Machold, Rick Soss
  • Publication number: 20080065818
    Abstract: The present invention presents a non-volatile memory and method for its operation that ensures reliable mechanism for write and erase abort detection in the event of lost of power during non-volatile memory programming and erasing with minimized system performance penalty. During a multi-sector write process, an indication of a successful write in one sector is written into the overhead of the following sector at the same time as the following sector's data content is written. The last sector written will additionally have an indication of its own successful write written into its overhead. For erase, an erase abort flag in the first sector of the block can be marked after a successful erase operation.
    Type: Application
    Filed: November 7, 2007
    Publication date: March 13, 2008
    Inventors: Jason Lin, Kevin Conley, Robert Chang
  • Publication number: 20070237329
    Abstract: A secure software system for a portable device or computer that provides a simple interface to the device or computer and that retrieves and dynamically decrypts keys and content from a secure media while minimizing exposure of the keys and eliminating the need for manufacturers of the device or computer to create a their own system to manage these complex processes.
    Type: Application
    Filed: May 31, 2007
    Publication date: October 11, 2007
    Inventors: Bahman Qawami, Farshid Sabet-Sharghi, Robert Chang
  • Publication number: 20070234341
    Abstract: Methods and apparatus for efficiently enabling firmware associated with a flash memory card to be updated are disclosed. According to one aspect of the present invention, a method for updating firmware associated with a memory storage device includes providing new firmware to a host and sending the new firmware from the host to a reader which communicates with the host. The reader interfaces with the memory storage device which includes installed firmware. The method also includes sending the new firmware from the reader to the memory storage device, and incorporating the new firmware into the memory storage device such that the new firmware at least partially replaces the installed firmware. In one embodiment, the method further includes embedding the new firmware into a first command. In such an embodiment, sending the new firmware from the host to the reader includes sending the first command from the host to the reader.
    Type: Application
    Filed: June 5, 2007
    Publication date: October 4, 2007
    Applicant: SANDISK CORPORATION
    Inventors: Robert Chang, Ping Li, Farshid Sabet-Sharghi
  • Patent number: 7272645
    Abstract: A method of improving the reliability of peer-to-peer network downloads includes the steps of initiating a search from a client on a peer-to-peer network (152). Next, a list of servers is downloaded that satisfies the search (154). At least one of the servers is selected from the list of servers (156). Next, one of a plurality of downloading systems is selected based on a predetermined criteria (158). A file is downloaded using one of the plurality of downloading systems.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: September 18, 2007
    Assignee: SBC Technology Resources, Inc.
    Inventors: Frederick Robert Chang, Sreenivasa Rao Gorti, Jennifer Lynne Joy
  • Publication number: 20070168668
    Abstract: The present invention presents techniques for transmitting application specific instruction between a host and a memory card. The commands for the application specific protocol are embedded along with a signature in the data portion of a transmission protocol that is used to communicate between the host the memory card. This allows for the transmission of application specific commands that lack a corresponding command in the transmission protocol to still be transmitted in that protocol. The method can be implemented on the host side either at the device driver level or the file level. In order to implement a read command in the application specific protocol, a write command in the first protocol with an embedded read command is first sent to a logical address, followed by a second read command to the same logical address.
    Type: Application
    Filed: December 8, 2005
    Publication date: July 19, 2007
    Inventors: Robert Chang, Henry Hutton, Farshid Sharghi, Haluk Tanik, Ron Barzilai, Meytal Ari
  • Publication number: 20070150694
    Abstract: Methods and apparatus for allow different mapping implementations, including a many-to-one logical to physical block mapping, to be used within a memory system are disclosed. According to one aspect of the present invention, a method for mapping a plurality of logical blocks to a physical block includes identifying a first logical block meets at least one criterion. The method also includes identifying a second logical block which is substantially complementary to the first logical block, and providing contents associated with the first logical block and contents associated with the second logical block to the physical block.
    Type: Application
    Filed: December 28, 2006
    Publication date: June 28, 2007
    Applicant: SANDISK CORPORATION
    Inventors: Robert Chang, Bahman Qawami, Farshid Sabet-Sharghi
  • Publication number: 20070136501
    Abstract: The present invention presents techniques for transmitting application specific instruction between a host and a memory card. The commands for the application specific protocol are embedded along with a signature in the data portion of a transmission protocol that is used to communicate between the host the memory card. This allows for the transmission of application specific commands that lack a corresponding command in the transmission protocol to still be transmitted in that protocol. The method can be implemented on the host side either at the device driver level or the file level. In order to implement a read command in the application specific protocol, a write command in the first protocol with an embedded read command is first sent to a logical address, followed by a second read command to the same logical address.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 14, 2007
    Inventors: Robert Chang, Henry Hutton, Farshid Sharghi, Haluk Tanik, Ron Barzilai, Meytal Ari
  • Publication number: 20070116287
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert Chang, Farshid Sabet-Sharghi
  • Publication number: 20070116288
    Abstract: One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Inventors: Oktay Rasizade, Bahman Qawami, Fabrice Jogand-Coulomb, Robert Chang, Farshid Sabet-Sharghi
  • Publication number: 20070106919
    Abstract: Methods and apparatus for enabling a power up process of a non-volatile memory to occur efficiently are disclosed. According to one aspect of the present invention, a method for utilizing a memory system that has a non-volatile memory with at least one reserved memory area includes providing power to the memory system, initializing the non-volatile memory, and writing a first signature into the reserved memory area. The first signature is arranged to indicate that the memory system was successfully initialized. In one embodiment, the method also includes executing a power down process on the memory system, and writing a second signature into the reserved memory area which indicates that the power down process has been executed.
    Type: Application
    Filed: December 27, 2006
    Publication date: May 10, 2007
    Applicant: SANDISK CORPORATION
    Inventors: Robert Chang, Bahman Qawami, Farshid Sabet-Sharghi, Sergey Yudin
  • Publication number: 20070101046
    Abstract: A system for booting a microprocessor controlled system wherein a basic interface between the processor and peripheral devices is copied from an application and file storage device into random access memory without usage of the microprocessor or need for a non-volatile code storage device.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 3, 2007
    Inventors: Robert Chang, Jong Guo, Farshid Sabet-Sharghi
  • Publication number: 20070056042
    Abstract: The memory device contains control structures that allow media content to be stored securely and distributed in a manner envisioned by the content owner, or service providers involved in the distribution. A wide variety of different avenues become available for distributing media content using such memory devices, such as where the devices contain one or more of the following: abridged preview media content, encrypted unabridged media content, prepaid content, rights and/or rules governing access to such content. The memory device has a type of control structures that enable a service provider (who can also be the content owner) to create a secure environment for media content distribution where end users and terminals register with the service provider, and gain access to the content in a manner controlled by the service provider. The various components to be loaded (e.g.
    Type: Application
    Filed: December 30, 2005
    Publication date: March 8, 2007
    Inventors: Bahman Qawami, Fabrice Jogand-Coulomb, Farshid Sabet-Sharghi, Michael Holtzman, Pascal Caillon, Patricia Dwyer, Paul McAvoy, Pedro Vargas, Po Yuan, Robert Chang
  • Publication number: 20070043667
    Abstract: The memory device contains control structures that allow media content to be stored securely and distributed in a manner envisioned by the content owner, or service providers involved in the distribution. A wide variety of different avenues become available for distributing media content using such memory devices, such as where the devices contain one or more of the following: abridged preview media content, encrypted unabridged media content, prepaid content, rights and/or rules governing access to such content. The memory device has a type of control structures that enable a service provider (who can also be the content owner) to create a secure environment for media content distribution where end users and terminals register with the service provider, and gain access to the content in a manner controlled by the service provider. The various components to be loaded (e.g.
    Type: Application
    Filed: December 30, 2005
    Publication date: February 22, 2007
    Inventors: Bahman Qawami, Fabrice Jogand-Coulomb, Farshid Sabet-Sharghi, Michael Holtzman, Pascal Caillon, Patricia Dwyer, Paul McAvoy, Pedro Vargas, Po Yuan, Robert Chang