Patents by Inventor Raja P. Perumal

Raja P. Perumal 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).

  • Resource access based on multiple scope levels
    Patent number: 8984624
    Abstract: A scope hierarchy corresponding to a resource to which a type of access is requested is identified, the scope hierarchy including multiple scope levels each of which has an associated access control list. An access control list associated with a lower scope level can further restrict access permitted to the resource by an access control list associated with a higher scope level. Based at least in part on one or more of the access control lists associated with the multiple scope levels, a determination is made as to whether the requested type of access to the resource is permitted.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: March 17, 2015
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Raja P. Perumal, Jeffrey B. Hamblin, Paul J. Leach
  • RESOURCE ACCESS BASED ON MULTIPLE SCOPE LEVELS
    Publication number: 20130269025
    Abstract: A scope hierarchy corresponding to a resource to which a type of access is requested is identified, the scope hierarchy including multiple scope levels each of which has an associated access control list. An access control list associated with a lower scope level can further restrict access permitted to the resource by an access control list associated with a higher scope level. Based at least in part on one or more of the access control lists associated with the multiple scope levels, a determination is made as to whether the requested type of access to the resource is permitted.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Inventors: Raja P. Perumal, Jeffrey B. Hamblin, Paul J. Leach
  • Resource access based on multiple scope levels
    Patent number: 8464319
    Abstract: A scope hierarchy corresponding to a resource to which a type of access is requested is identified, the scope hierarchy including multiple scope levels each of which has an associated access control list. An access control list associated with a lower scope level can further restrict access permitted to the resource by an access control list associated with a higher scope level. Based at least in part on one or more of the access control lists associated with the multiple scope levels, a determination is made as to whether the requested type of access to the resource is permitted.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: June 11, 2013
    Assignee: Microsoft Corporation
    Inventors: Raja P. Perumal, Jeffrey B. Hamblin, Paul J. Leach
  • RESOURCE ACCESS BASED ON MULTIPLE SCOPE LEVELS
    Publication number: 20110173679
    Abstract: A scope hierarchy corresponding to a resource to which a type of access is requested is identified, the scope hierarchy including multiple scope levels each of which has an associated access control list. An access control list associated with a lower scope level can further restrict access permitted to the resource by an access control list associated with a higher scope level. Based at least in part on one or more of the access control lists associated with the multiple scope levels, a determination is made as to whether the requested type of access to the resource is permitted.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 14, 2011
    Applicant: MICROSOFT CORPORATION
    Inventors: Raja P. Perumal, Jeffrey B. Hamblin, Paul J. Leach
  • Human interactive proof service
    Patent number: 7533419
    Abstract: A human interactive proof (HIP) service is described. In response to a request from a web server, the HIP service generates a HIP challenge and an associated attestation. The web server can then embed the generated HIP challenge in a requested web page. The attestation is used to determine whether or not a user response to the HIP challenge is correct.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: May 12, 2009
    Assignee: Microsoft Corporation
    Inventors: Ismail Cem Paya, Josh D. Benaloh, Raja P. Perumal, Trevin M Chow, Erren Dusan Lester, Jeffrey Steinbok, Julien D. Couvreur