Committed to connecting the world

  •  
wtisd

Intellectual property rights (IPR) in ITU-T Recommendations

Patent statement declaration registered as T81-01

Citation: http://handle.itu.int/11.1002/ps/T81-01
Recommendation number: T.81
ITU registration date: 1993-08-02
Statement declaration date: 1993-08-02
Patent holder/organization: International Business Machines Corporation
Main contact: Mr. Richard Holleman, Director of Standards, Intellectual Property and Licensing
Address: North Castle Drive
Armonk, NY 10504-1785
United States
Tel.: +1 914 765 4375
Fax: +1 914 765 4420
Declaration form version: Declared without the use of the form.
Licensing declaration: Pat. pol. 2.2 (Under the condition of reciprocity; Patent statement addressed to ISO)
Late submission remark: -
Statement remark: -
Archived declaration:
TSB patent IdCountryPublication numberApplication numberTitleStatusEPO search (Espacenet)
T81-01-01
US
4633490 Symmetrical adaptive data compression/decompression systemGranted
T81-01-02
US
4652856 A multiplication-free multi-alphabet arithmetic codeGranted
T81-01-03
US
4369463 Grey scale image compression with code words a function of image historyGranted
T81-01-04
US
4749983 Compression of multilevel signalsGranted
T81-01-05
US
4935882 Probability adaption for arithmetic codersGranted
T81-01-06
US
4905297 Arithmetic coding encoder and decoder systemGranted
T81-01-07
US
5099440 Probability adaption for arithmetic codersGranted
Disclaimer: This database only displays information communicated to the ITU Secretariat, and is not certified to be either accurate or complete.
The ITU secretariat does not verify the veracity, completeness or accuracy of the information contained in the Patent and Software Declaration Forms, including the actual or potential essentiality of patents or patent applications declared as essential to ITU-T Recommendations.