IPR Details
Hitachi, Ltd.'s Statement about IPR related to RFC 6147

• Disclosure
• History

Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.

I. Patent Holder/Applicant ("Patent Holder")

Holder legal name	Hitachi, Ltd.

II. Patent Holder's Contact for License Application

Holder contact name	Mr. Katsuyuki Uchiyama
Holder contact email	katsuyuki.uchiyama.sf@hitachi.com
Holder contact info	Department Manager IP Business Development Dept., Intellectual Property Division Marunouchi Center Bldg, 6-1 Marunouchi 1-chome Chiyoda-ku, Tokyo 100-8220 Japan T: +81-3-5223-4544 F: +81-3-3214-3146

III. Contact Information for the IETF Participant Whose Personal Belief Triggered this Disclosure

Name	Mr. Yoshitaka Iwata
Email	yoshitaka.iwata.bs@hitachi.com
Other info	Planning Manager R&D Strategy Planning & Export Administration Dept.,Business Development Operation,Telecommunication & Network Systems Division Hitachi System Plaza Shinkawasaki, 1-1-2 Kashimada, Saiwai, Kawasaki, Kanagawa, 212-8567 Japan T: +81-44-549-1794 F: +81-44-549-1793

IV. IETF Document or Other Contribution to Which this IPR Disclosure Relates

RFC: RFC6147 ("DNS64: DNS Extensions for Network Address Translation from IPv6 Clients to IPv4 Servers")

V. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 3979 as updated by RFC 4879

A. For granted patents or published pending patent applications, please provide the following information:

Patent, Serial, Publication, Registration, or Application/File number(s)

JP3344238 JP3744391 JP3747820 JP4169025 JP4424401 US6118784 US6690669 US7072338 US7072339 US6920137 US6920136 US6928077 US6912219 US6920138 US7193998 US7746863 US8031716 US8594108 GB00840482 GB1773013 DE00840482 DE1773013 FR00840482 FR1773013 Date: 8/30/2002,12/2/2005,12/9/2005,8/15/2008,12/18/2009,9/12/2000,2/10/2004,7/4/2006,7/4/2006,7/19/2005,7/19/2005,8/9/2005,6/28/2005,7/19/2005,3/20/2007,6/29/2010,10/4/2011,11/26/2013,4/25/2007,5/22/2013,4/25/2007,05/22/2013,4/25/2007,5/22/2013 Country: USA,Japan,UK,Germany,France

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending	Yes

VI. Licensing Declaration

The Patent Holder states that its position with respect to licensing any patent claims contained in the patent(s) or patent application(s) disclosed above that would necessarily be infringed by implementation of the technology required by the relevant IETF specification ("Necessary Patent Claims"), for the purpose of implementing such specification, is as follows(select one licensing declaration option only):

Licensing	Reasonable and Non-Discriminatory License to All Implementers with Possible Royalty/Fee
Licensing information, comments, notes, or URL for further information	If a submission by Hitachi is included in an IETF standard and Hitachi has patent(s) that are essential to the implementation of such IETF standard, Hitachi is prepared to offer non-exclusive license on reasonable, non-discriminatory terms, provided that such terms shall include a reciprocal grantback license from a prospective licensee. Notwithstanding the foregoing, Hitachi's offer shall not apply in situations where a prospective licensee is adverse to Hitachi or where a prospective licensee and Hitachi are engaged in a contested matter, including a patent office proceeding, involving any IPR listed in the submission.

Note: The individual submitting this template represents and warrants that he or she is authorized by the Patent Holder to agree to the above-selected licensing declaration.

VII. Contact Information of Submitter of this Form

Submitter name	Mr. Katsuyuki Uchiyama
Submitter email	katsuyuki.uchiyama.sf@hitachi.com

Only those sections of the relevant entry form where the submitter provided information are displayed above.