Patents by Inventor James H. Buchanan

James H. Buchanan 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: 8385342
    Abstract: A system of route target filtering includes an import filter receiving a plurality of routes having a next hop routing information. The import filter accepts a first subset of the routes according to an import target policy. The system further includes a re-export filter also receiving the plurality of routes. The re-export filter modifies the next hop information of a second subset of the routes, and distributes the modified routes.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: February 26, 2013
    Assignee: Fujitsu Limited
    Inventors: Li Mo, James H. Buchanan, Robert T. Gibson, Nimer Yaseen
  • Patent number: 8014283
    Abstract: A system and method for topology constrained Quality of Service (QoS) provisioning between a plurality of sites in a Virtual Private Network (VPN) is disclosed. The method comprises enabling graphical definition of relationships between the plurality of sites of the VPN and enabling graphical definition of at least one QoS rule for at least one pair of sites of the plurality of sites of the VPN based at least in part on the defined relationship.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 6, 2011
    Assignee: Fujitsu Limited
    Inventors: Robert T. Gibson, James H. Buchanan, Lawrence MacFadyen, Ross MacCharles, Mark Jamensky
  • Patent number: 7450505
    Abstract: A system and method for topology constrained routing policy provisioning between a plurality of sites in a Virtual Private Network (VPN) is disclosed. The method comprises enabling graphically defining of relationships between the plurality of sites of the VPN; and automatically generating at least one routing rule for each site of the VPN based at least in part on the defined relationship.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: November 11, 2008
    Assignee: Fujitsu Limited
    Inventors: James H. Buchanan, Li Mo, Robert T. Gibson, Alexander Choi
  • Patent number: 7245635
    Abstract: A method for allocating and resizing a link on a communication medium is provided. The utilization of an allocated link is monitored and an unused bandwidth thereof is determined. Upon request for allocation of a second link, at least a portion of the unused bandwidth is included in the bandwidth of the second link allocated. A network including two nodes and a communication medium terminated thereby is operable to provide a plurality of communication links and is operable to resize the bandwidth of the allocated links is provided. The network is operable to monitor the utilization of an allocated bandwidth of an allocated link and deallocate a part of the allocated bandwidth that is non-utilized by the allocated link. The deallocated bandwidth, or a portion thereof, may then be included in a bandwidth allocation made for allocation of an additional link.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: July 17, 2007
    Assignee: Fujitsu Limited
    Inventors: Li Mo, James A. Spallin, Jennifer J. Liu, Abinder S. Dhillon, James H. Buchanan, Badarinath Devalla
  • Patent number: 6665674
    Abstract: Methods and apparatus are provided for processing messages for access to information stored in an open directory. A Lightweight Directory Access Protocol (LDAP) LDAP Validation Proxy (LVP) is used to intercept LDAP request messages intended for the directory, validates the LDAP requests according to a schema description and optionally provides side-effects. The schema validation and LDAP message processing is modularized according to object classes representing the data stored in the directory and according to services provided. The schema is enforced by validating LDAP messages. This modularization provides a controlled message processing granularity and enables multi-threaded concurrent processing of multiple LDAP messages. The LVP has the capability of generating LDAP requests in processing LDAP messages. The LVP also intercepts and processes LDAP responses issued by a directory and intended for clients.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: December 16, 2003
    Assignee: Nortel Networks Limited
    Inventors: James H. Buchanan, Robert T. Gibson, Bruce E. Dunn, Brian D. Connell, Ian A. Macfarlane, Scott E. Miller
  • Publication number: 20030208433
    Abstract: A system and a method to implement a three sectored business model that facilitates the trading of bandwidth as a commodity. One sector includes resource entities that require or generate the resource or commodity to be traded—bandwidth. Another sector includes bandwidth enabling entities that neutrally provide a pool of bandwidth that can be obtained from a variety of resource entities in a competitive manner. The last sector includes trading companies that interface with resource entities, bandwidth enabling entities, or traders, and facilitate the trading of the bandwidth based on the availability of the bandwidth from one or more bandwidth enabling entities or resource entities. A core engine operates as the central controller and data exchange source for facilitating the execution of trades between and for all entities, provisioning of connections, monitoring of the network, sharing and feedback of data to relative subsystems, and provide data control abilities to subscribing entities.
    Type: Application
    Filed: December 12, 2000
    Publication date: November 6, 2003
    Inventors: Paul Haddad, Stephen J. Harris, Miguel A. Planas, Sieghard Maier, Margaret A. Plucinska, James H. Buchanan
  • Publication number: 20030072264
    Abstract: A method for allocating and resizing a link on a communication medium is provided. The utilization of an allocated link is monitored and an unused bandwidth thereof is determined. Upon request for allocation of a second link, at least a portion of the unused bandwidth is included in the bandwidth of the second link allocated. A network including two nodes and a communication medium terminated thereby is operable to provide a plurality of communication links and is operable to resize the bandwidth of the allocated links is provided. The network is operable to monitor the utilization of an allocated bandwidth of an allocated link and deallocate a part of the allocated bandwidth that is non-utilized by the allocated link. The deallocated bandwidth, or a portion thereof, may then be included in a bandwidth allocation made for allocation of an additional link.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Applicant: Fujitsu Networks
    Inventors: Li Mo, James A. Spallin, Jennifer J. Liu, Abinder S. Dhillon, James H. Buchanan, Badarinath Devalla
  • Publication number: 20020191541
    Abstract: A system and method for topology constrained routing policy provisioning between a plurality of sites in a Virtual Private Network (VPN) is disclosed. The method comprises enabling graphically defining of relationships between the plurality of sites of the VPN; and automatically generating at least one routing rule for each site of the VPN based at least in part on the defined relationship.
    Type: Application
    Filed: February 7, 2002
    Publication date: December 19, 2002
    Applicant: Fujitsu Network Communications, Inc.
    Inventors: James H. Buchanan, Li Mo, Robert T. Gibson, Alexander Choi
  • Publication number: 20020186664
    Abstract: A system and method for topology constrained Quality of Service (QoS) provisioning between a plurality of sites in a Virtual Private Network (VPN) is disclosed. The method comprises enabling graphical definition of relationships between the plurality of sites of the VPN and enabling graphical definition of at least one QoS rule for at least one pair of sites of the plurality of sites of the VPN based at least in part on the defined relationship.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 12, 2002
    Applicant: Fujitsu Network Communications, Inc.
    Inventors: Robert T. Gibson, James H. Buchanan, Lawrence MacFadyen, Ross MacCharles, Mark Jamensky
  • Publication number: 20020181477
    Abstract: A system of route target filtering includes an import filter receiving a plurality of routes having a next hop routing information. The import filter accepts a first subset of the routes according to an import target policy. The system further includes a re-export filter also receiving the plurality of routes. The re-export filter modifies the next hop information of a second subset of the routes, and distributes the modified routes.
    Type: Application
    Filed: January 11, 2002
    Publication date: December 5, 2002
    Applicant: Fujitsu Network Communications, Inc.
    Inventors: Li Mo, James H. Buchanan, Robert T. Gibson, Nimer Yaseen
  • Patent number: 5143621
    Abstract: An improved method of decontaminating a solvent which contains mustard. The mprovement consists essentially of using polydivinylbenzene to absorb the said mustard.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 1, 1992
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Philip W. Bartram, Noel C. DiBona, James H. Buchanan, Dennis K. Rohrbaugh
  • Patent number: 5069797
    Abstract: A polydivinylbenezene macroreticular strong acid resin can effectively detaminate solutions containing organophosphorus chemical warfare agents such as o-ethyl S-(2-diisopropylaminoethyl) methylphosphonothiolate (VX).
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: December 3, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Philip W. Bartram, Noel C. DiBona, James H. Buchanan, Dennis K. Rohrbaugh