Patents by Inventor Tomofumi Yokota

Tomofumi Yokota 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: 7328351
    Abstract: An mail processing apparatus for confirming contents of encrypt mail. Electronic mail delivered in MTA is received by a receiving section. When the received electronic mail has been encrypted or an electronic signature has been affixed, signature verification and decoding are performed by an electronic signature verification/decoding section. The contents of the mail in which the signature verification and the decoding are performed are confirmed by a content confirmation section. Subsequent to this, a signature and encryption are properly performed with respect to the mail by an electronic signature/encryption section. Mail of an account destination of a mail server is held in a spool. The spooled mail is taken out using a delivery part by a mail user agent device. Mail of an account destination of another mail server is delivered to another mail server destination through the delivery section.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: February 5, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tomofumi Yokota, Naoyasu Terao
  • Patent number: 7302563
    Abstract: A mailing list server and a mail re-sending method thereof with which, when a mail recipient has been unable to decrypt a mail, it is possible to re-send the mail compatibly encrypted in a form such that the recipient can decrypt it without fail. A mail re-send request from a member is made by HTTP, received by a web server 20, and processed by an application server 21. For example, re-send request information is sent to the web server 20 by a mailing list member, using an input form of a web page 303 from the web server 20. The application server 21 determines an encryption method on the basis of a user encryption method specification included in the mail re-send request. A sending part 101 encrypts the mail by the determined method and sends it to the member's address.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: November 27, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yutaka Kobayashi, Tomofumi Yokota, Naoyasu Terao
  • Publication number: 20060200857
    Abstract: A certificate acquisition system which includes a management communication apparatus that connects to a device and also connects via a network to a management center for managing the device, acquires management information from the device, sends the management information to the management center, and requests for a digital certificate to a certification authority, the system having: a registration information memory section which pre-registers identification information for a management communication apparatus and a device that should be connected; an identification information acquisition section that acquires device identification information from the device; a certificate issuance request section that requests the certification authority to issue the digital certificate, the request including the acquired device identification information and management communication apparatus identification information; an issuance request receiving section that receives the request to issue the digital certificate; a ce
    Type: Application
    Filed: February 17, 2006
    Publication date: September 7, 2006
    Inventor: Tomofumi Yokota
  • Publication number: 20030217261
    Abstract: An mail processing apparatus for confirming contents of encrypt mail. Electronic mail delivered in MTA is received by a receiving section. When the received electronic mail has been encrypted or an electronic signature has been affixed, signature verification and decoding are performed by an electronic signature verification/decoding section. The contents of the mail in which the signature verification and the decoding are performed are confirmed by a content confirmation section. Subsequent to this, a signature and encryption are properly performed with respect to the mail by an electronic signature/encryption section. Mail of an account destination of a mail server is held in a spool. The spooled mail is taken out using a delivery part by a mail user agent device. Mail of an account destination of another mail server is delivered to another mail server destination through the delivery section.
    Type: Application
    Filed: March 26, 2003
    Publication date: November 20, 2003
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Tomofumi Yokota, Naoyasu Terao
  • Publication number: 20030188149
    Abstract: A mailing list server and a mail re-sending method thereof with which, when a mail recipient has been unable to decrypt a mail, it is possible to re-send the mail compatibly encrypted in a form such that the recipient can decrypt it without fail. A mail re-send request from a member is made by HTTP, received by a web server 20, and processed by an application server 21. For example, re-send request information is sent to the web server 20 by a mailing list member, using an input form of a web page 303 from the web server 20. The application server 21 determines an encryption method on the basis of a user encryption method specification included in the mail re-send request. A sending part 101 encrypts the mail by the determined method and sends it to the member's address.
    Type: Application
    Filed: January 17, 2003
    Publication date: October 2, 2003
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Yutaka Kobayashi, Tomofumi Yokota, Naoyasu Terao