Patents by Inventor Pieter R. Kasselman

Pieter R. Kasselman 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 credentials
    Patent number: 8904509
    Abstract: A collection of multiple user credentials each associated with one of multiple different users is obtained at a device, and one or more of the multiple user credentials are verified. A determination is made as to whether access to a resource is permitted, by at least comparing the collection of multiple user credentials to a threshold combination of user credentials to be satisfied to access the resource. An indication of whether access to the resource by a requesting user is permitted is returned or provided to another device.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Microsoft Corporation
    Inventors: Marc R. Barbour, Carl M. Ellison, Kristjan E. Hatlelid, Janet L. Schneider, Pieter R. Kasselman
  • Distinguishing live faces from flat surfaces
    Patent number: 8675926
    Abstract: Multiple images including a face presented by a user are accessed. One or more determinations are made based on the multiple images, such as a determination of whether the face included in the multiple images is a 3-dimensional structure or a flat surface and/or a determination of whether motion is present in one or more face components (e.g., eyes or mouth). If it is determined that the face included in the multiple images is a 3-dimensional structure or that that motion is present in the one or more face components, then an indication is provided that the user can be authenticated. However, if it is determined that the face included in the multiple images is a flat surface or that motion is not present in the one or more face components, then an indication is provided that the user cannot be authenticated.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: March 18, 2014
    Assignee: Microsoft Corporation
    Inventors: Zhengyou Zhang, Qin Cai, Pieter R. Kasselman, Arthur H. Baker
  • Resource access based on multiple credentials
    Patent number: 8418237
    Abstract: A collection of multiple user credentials each associated with one of multiple different users is obtained at a device, and one or more of the multiple user credentials are verified. The collection of multiple user credentials is also compared to a threshold combination of user credentials to be satisfied to access the resource, and a determination is made, based on the comparing and the verifying, as to whether access to the resource is permitted. An indication of whether access to the resource by a requesting user is permitted is returned or provided to another device.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: April 9, 2013
    Assignee: Microsoft Corporation
    Inventors: Marc R. Barbour, Carl M. Ellison, Kristjan E. Hatlelid, Janet L. Schneider, Pieter R. Kasselman
  • Distinguishing Live Faces from Flat Surfaces
    Publication number: 20110299741
    Abstract: Multiple images including a face presented by a user are accessed. One or more determinations are made based on the multiple images, such as a determination of whether the face included in the multiple images is a 3-dimensional structure or a flat surface and/or a determination of whether motion is present in one or more face components (e.g., eyes or mouth). If it is determined that the face included in the multiple images is a 3-dimensional structure or that that motion is present in the one or more face components, then an indication is provided that the user can be authenticated. However, if it is determined that the face included in the multiple images is a flat surface or that motion is not present in the one or more face components, then an indication is provided that the user cannot be authenticated.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: Microsoft Corporation
    Inventors: Zhengyou Zhang, Qin Cai, Pieter R. Kasselman, Arthur H. Baker
  • RESOURCE ACCESS BASED ON MULTIPLE CREDENTIALS
    Publication number: 20110093939
    Abstract: A collection of multiple user credentials each associated with one of multiple different users is obtained at a device, and one or more of the multiple user credentials are verified. The collection of multiple user credentials is also compared to a threshold combination of user credentials to be satisfied to access the resource, and a determination is made, based on the comparing and the verifying, as to whether access to the resource is permitted. An indication of whether access to the resource by a requesting user is permitted is returned or provided to another device.
    Type: Application
    Filed: October 20, 2009
    Publication date: April 21, 2011
    Applicant: Microsoft Corporation
    Inventors: Marc R. Barbour, Carl M. Ellison, Kristjan E. Hatlelid, Janet L. Schneider, Pieter R. Kasselman