Patents by Inventor Timothy Stammers

Timothy Stammers 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: 7751830
    Abstract: Techniques for allowing a home agent to provide location/presence-based services are provided. In one embodiment, a point of attachment of an access network receives a discovery request from a mobile node. A mobile node is associated with a home agent in a home network different from the access network. Location/presence-based information is determined at the point of attachment. The location/presence-based information is added to a registration request at the layer 3 protocol layer. The registration request is then sent from the point of attachment to the home agent. When the registration request is received at the home agent, the home agent parses the registration request to determine the location/presence information from the request. The home agent then performs a location/presence service using the location/presence information.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 6, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Jayaraman Iyer, Anand K. Oswal, Timothy Stammers, Kent Leung
  • Patent number: 7582770
    Abstract: An enantiomer, diastereoisomer or tautomer of a compound, represented by formula I: wherein A, B, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are as defined herein, or a salt or ester thereof, as an inhibitor of HCV NS5B polymerase.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: September 1, 2009
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Youla S. Tsantrizos, Catherine Chabot, Pierre Beaulieu, Christian Brochu, Timothy A. Stammers, Bounkham Thavonekham, Jean Rancourt
  • Publication number: 20090170859
    Abstract: An enantiomer, diastereoisomer or tautomer of a compound, represented by formula I: wherein A, B, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are as defined herein, or a salt or ester thereof, as an inhibitor of HCV NS5B polymerase.
    Type: Application
    Filed: February 17, 2009
    Publication date: July 2, 2009
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Youla S. TSANTRIZOS, Catherine CHABOT, Pierre BEAULIEU, Christian BROCHU, Martin POIRIER, Timothy A. STAMMERS, Bounkham THAVONEKHAM, Jean RANCOURT
  • Publication number: 20090046703
    Abstract: In one embodiment, a network device receives an Internet protocol (IP) registration request, such as a mobile IP registration request, from an access terminal. The network device may be a home agent that is configured to register the access terminal for IP services at the network layer. In addition to registering the access terminal at the network layer, the network device may facilitate registration at another layer, such as the application layer. In one example, registration information for the access terminal for an application layer registration, such as information needed to register for a session initiation protocol (SIP) services, is determined. The network device then facilitates registration at the application layer automatically using the registration information.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 19, 2009
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Jonathan D. Rosenberg, Flemming Andreasen, Jayaraman Iyer, Timothy Stammers
  • Publication number: 20090042973
    Abstract: The present invention relates to a novel class of sulfonamides which are aspartyl protease inhibitors. In one embodiment, this invention relates to a novel class of HIV aspartyl protease inhibitors characterized by specific structural and physicochemical features. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention are particularly well suited for inhibiting HIV-1 and HIV-2 protease activity and consequently, may be advantageously used as anti-viral agents against the HIV-1 and HIV-2 viruses. This invention also relates to methods for inhibiting the activity of HIV aspartyl protease using the compounds of this invention and methods for screening compounds for anti-HIV activity.
    Type: Application
    Filed: July 2, 2008
    Publication date: February 12, 2009
    Inventors: Michael R. Hale, Christopher T. Baker, Timothy A. Stammers, Ronald George Sherrill, Andrew Spaltenstein, Eric Steven Furfine, Francois Maltais, Clarence Webster Andrews, III, John Franklin Miller, Vicente Samano
  • Patent number: 7442718
    Abstract: The present invention relates to a novel class of sulfonamides which are aspartyl protease inhibitors. In one embodiment, this invention relates to a novel class of HIV aspartyl protease inhibitors characterized by specific structural and physicochemical features. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention are particularly well suited for inhibiting HIV-1 and HIV-2 protease activity and consequently, may be advantageously used as anti-viral agents against the HIV-1 and HIV-2 viruses. This invention also relates to methods for inhibiting the activity of HIV aspartyl protease using the compounds of this invention and methods for screening compounds for anti-HIV activity.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: October 28, 2008
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Michael R Hale, Christopher T Baker, Timothy A Stammers, Ronald G Sherrill, Andrew Spaltenstein, Eric S Furfine, Francois Maltais, Clarence W Andrews, III, John F Miller, Vicente Samano
  • Publication number: 20080254793
    Abstract: In one embodiment, a method can include: (i) assigning an attribute to each of a plurality of processors, and designating one of the plurality of processors as a proxy processor; (ii) when a user session begins using a first of the plurality of processors, sending a first notification message to a server; and (iii) when a rebooting of the first processor occurs: (a) suppressing a second notification message from the first processor in the proxy processor; and (b) sending a third notification message with the attribute to the server to enable the server to modify a user file in the server using the attribute.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 16, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Biswaranjan Panda, Bhaskar Bhupalam, Timothy Stammers
  • Publication number: 20080175200
    Abstract: In one embodiment, an apparatus can include: (i) a layer 3 point of attachment having an input configured to receive handoff indicative information from a mobile device substantially in parallel with the handoff indicative information being received in a layer 2 handoff function; and (ii) logic configured to perform a handoff facilitating action in response to the handoff indicative information.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 24, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Timothy Stammers, Varsha Clare
  • Publication number: 20080045516
    Abstract: Compounds of formula I: wherein X, R2, R3, R5 and R6 are defined herein, are useful as inhibitors of the hepatitis C virus NS5B polymerase.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 21, 2008
    Inventors: Pierre Beaulieu, Rene Coulombe, Gulrez Fazal, Sylvie Goulet, Martin Poirier, Jean Rancourt, Timothy Stammers, Bounkham Thavonekham
  • Publication number: 20070291705
    Abstract: Techniques for allowing a home agent to provide location/presence-based services are provided. In one embodiment, a point of attachment of an access network receives a discovery request from a mobile node. A mobile node is associated with a home agent in a home network different from the access network. Location/presence-based information is determined at the point of attachment. The location/presence-based information is added to a registration request at the layer 3 protocol layer. The registration request is then sent from the point of attachment to the home agent. When the registration request is received at the home agent, the home agent parses the registration request to determine the location/presence information from the request. The home agent then performs a location/presence service using the location/presence information.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 20, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Jayaraman Iyer, Anand K. Oswal, Timothy Stammers, Kent Leung
  • Publication number: 20070258416
    Abstract: Assigning an access terminal identifier to a mobile node includes receiving a request at an access terminal home agent of a radio access network. The request requests an access terminal identifier for the mobile node. An access terminal identifier is assigned to the mobile node. The access terminal identifier identifies a communication session of the mobile node, and is assigned according to an Internet Protocol procedure for assigning an address. The access terminal identifier is provided to the mobile node.
    Type: Application
    Filed: May 8, 2006
    Publication date: November 8, 2007
    Inventors: Parviz Yegani, Anand Oswal, Timothy Stammers
  • Publication number: 20070249334
    Abstract: Particular embodiments provide an access gateway that facilitates communication between a plurality of access technologies. The access gateway facilitates data communication with an access terminal through a bearer path. A radio resource manager is configured to provide radio resource management functions for the communications. The radio resource manager is decoupled from the bearer path and provides control of radio transmission characteristics for the bearer path to the gateway. Because the radio resource manager is not in the bearer path, the access gateway may be access technology agnostic. Thus, the access gateway does not need to have access-specific modules based on the radio technology for each bearer path.
    Type: Application
    Filed: February 16, 2007
    Publication date: October 25, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Anand Oswal, Timothy Stammers, Jayaraman Iyer, Parviz Yegani
  • Publication number: 20070249629
    Abstract: A compound, represented by formula (I): wherein A, B, R1, R2, R3, R5, R6, R7, R9, and R10 are as defined herein, or an enantiomer, diastereoisomer or tautomer thereof, including a salt, ester or derivative thereof, as an inhibitor of HCV NS5B polymerase.
    Type: Application
    Filed: May 25, 2007
    Publication date: October 25, 2007
    Inventors: Pierre BEAULIEU, Christian Brochu, Stephen Kawai, Jean Rancourt, Timothy Stammers, Bounkham Thavonekham, Youla Tsantrizos
  • Publication number: 20070219176
    Abstract: Compounds of formula I: wherein X, R2, R3, R5 and R6 are defined herein, are useful as inhibitors of the hepatitis C virus NS5B polymerase.
    Type: Application
    Filed: January 29, 2007
    Publication date: September 20, 2007
    Applicant: Boehringer Ingelheim International GmbH
    Inventors: Rene Coulombe, Gulrez Fazal, Jean Rancourt, Timothy Stammers, Bounkham Thavonekham
  • Publication number: 20070220251
    Abstract: Establishing one or more facets of a policy includes facilitating a communication session for an access terminal at a visited network. The access terminal is associated with a home network having a home policy server. The policy is received at a visited policy server of the visited network. The policy comprises the facets. If the facets are unacceptable, the facets are negotiated until a stopping point is reached. The negotiation includes adjusting by the visited policy server at least one facet of the one or more facets, and notifying the home policy server of the adjustment. The facets are established in accordance with the negotiation.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 20, 2007
    Inventors: Jonathan Rosenberg, Flemming Andreasen, Timothy Stammers
  • Publication number: 20070206557
    Abstract: Communicating packets along a bearer path includes receiving a home network address and a visited network address at an access terminal. The home network address corresponds to a home anchored bearer path anchored at a home network of the access terminal. The visited network address corresponds to a visited anchored bearer path anchored at a visited network. The access terminal determines whether to use the home anchored bearer path or the visited anchored bearer path, and communicates packets using the home network address or the visited network address in accordance with the determination.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 6, 2007
    Inventors: Jayaraman Iyer, Kent Leung, Timothy Stammers, Anand Oswal
  • Publication number: 20070206556
    Abstract: In one embodiment, a first node receives data associated with a mobile node. The mobile node includes a plurality of sessions associated with it. For example, the plurality of sessions may be associated with flows for different services, such as voice over IP. A session for the data is determined out of a plurality of sessions. Labels may be provided that correspond to sessions in the plurality of sessions and a label is then determined for the session. The data is sent to the second node in a packet that includes the label. The packet is sent using a label switched path (LSP) in a multi-protocol label switching (MPLS) network. When the second node receives the data, it uses the label to determine a performance treatment to apply to the data. For example, different labels may correspond to the different sessions and different sessions may be associated with different quality of service (QoS) levels.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 6, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Parviz Yegani, Anand K. Oswal, Timothy Stammers, Jayaraman lyer
  • Publication number: 20070206539
    Abstract: In one embodiment according to the present disclosure, a system for implementing handover of a mobile IP session in a cellular communication network generally includes a processor and a memory for storing one or more context information rules associated with an access terminal. The processor is operable to receive a registration request message from the target radio network controller and in response to receipt of the registration request message, transmit a context information request message to query context information from an anchor IP gateway. The processor is also operable to receive a context information response message from the anchor IP gateway and apply the context information response message to the mobile IP connection. The context information response message including at least one context information rule that is associated with the access terminal.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 6, 2007
    Inventors: Parviz Yegani, Jayaraman Iyer, Timothy Stammers, Anand Oswal
  • Publication number: 20070202873
    Abstract: Particular embodiments provide an optimal allocation of a bearer manager or home agent. In one embodiment, a message is received from a mobile node requesting access to a visiting network that is different from a home network for the mobile node. An authentication request is sent to the home network requesting authentication for access. The authentication request indicates that a home agent has not been assigned. The home AAA server then sends a response that indicates the visiting AAA server can assign a home agent for the mobile node. The visiting AAA server then assigns a home agent that is optimally determined. The visiting home agent is different from a home agent that is found in the mobile node's home network. When a registration request is received, an IP gateway may send the registration request to the visiting home agent, which may not be sent back to the home network.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 30, 2007
    Applicant: Cisco Technology, Inc.
    Inventors: Parviz Yegani, Timothy Stammers, Jayaraman Iyer, Anand Oswal
  • Patent number: 7241801
    Abstract: A compound, represented by formula (I): wherein A, B, R1, R2, R3, R5, R6, R7, R9, and R10 are as defined herein, or an enantiomer, diastereoisomer or tautomer thereof, including a salt, ester or derivative thereof, as an inhibitor of HCV NS5B polymerase.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: July 10, 2007
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Pierre Beaulieu, Christian Brochu, Stephen Kawai, Jean Rancourt, Timothy A. Stammers, Bounkham Thavonekham, Youla S. Tsantrizos