Patents by Inventor Amal Ahmed Shaheen

Amal Ahmed Shaheen 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: 6119151
    Abstract: A cache manager efficiently supporting both connected and disconnected client operation. A single integrated cache is maintained for file system data, status and pathname information. File system requests are satisfied by the cache if possible and passed to a remote file system for servicing if necessary. The cache manager is independent of operating system file syntax and distributed file system protocol. Disconnected operation is supported through an aggressive caching policy and by logging of file system modifications. Modification logs are created when the client is disconnected by logging objects that optimize the log as it is created. Cache file system objects can have multiple parents each with different naming syntax because the object name is not cached.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: September 12, 2000
    Assignee: International Business Machines Corp.
    Inventors: Thomas George Cantrell, Sebnem Jaji, Amal Ahmed Shaheen, Richard Byron Ward
  • Patent number: 6052785
    Abstract: A system and method for managing client authorization to access remote data repositories through a middle tier server such as a web server. Client remote data repository access is intercepted by the middle tier server and the server is searched for stored credentials permitting client access to the remote data repository. If found, the stored credentials are used to authenticate access without further interaction with the client system. If no stored credentials are found, the server requests credentials from the client and passes them to the remote data repository for validation. Validated credentials are stored by the server for future use and indexed by a client identifier. Permitted remote data repository access is stored with the validated credentials. Access to a mounted remote file system is not permitted without authorization even if the remote file system would not otherwise require authorization.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: April 18, 2000
    Assignee: International Business Machines Corporation
    Inventors: David Dah-Haur Lin, Amal Ahmed Shaheen, Krishna Kishore Yellepeddy
  • Patent number: 6032227
    Abstract: A system and method for managing a mobile file system cache to maximize data storage and reduce problems from cache full conditions. Cache management automatically determines when the space available in the cache falls below a user-specified threshold. The cache manager attempts to free space needed for caching the next object. Files are deleted from the cache if no server updates are pending and if such deletion will provide the needed space. If automatic deletion does not provide sufficient space, the user is prompted for action. The system user can control the cache by increasing or reducing its size and drive allocation and can explicitly evict clean files from the cache. Cache expansion can be to logical or physical storage devices different than those on which the original cache is stored. The system enables separate storage of temporary files allowing identification and deletion of such files.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: February 29, 2000
    Assignee: International Business Machines Corporation
    Inventors: Amal Ahmed Shaheen, Krishna Kishore Yellepeddy
  • Patent number: 5893920
    Abstract: A system and method for managing a mobile file system cache to maximize data storage and reduce problems from cache full conditions. Cache management automatically determines when the space available in the cache falls below a user-specified threshold. The cache manager attempts to free space needed for caching the next object. Files are deleted from the cache if no server updates are pending and if such deletion will provide the needed space. If automatic deletion does not provide sufficient space, the user is prompted for action. The system user can control the cache by increasing or reducing its size and drive allocation and can explicitly evict clean files from the cache. Cache expansion can be to logical or physical storage devices different than those on which the original cache is stored. The system enables separate storage of temporary files allowing identification and deletion of such files.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: April 13, 1999
    Assignee: International Business Machines Corporation
    Inventors: Amal Ahmed Shaheen, Krishna Kishore Yellepeddy