The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2002
Filed:
Dec. 07, 1999
Wayne David Michaels, Berkshire, GB;
Anthony Richard Timson, Middlesex, GB;
Aden William Dervan, London, GB;
British Technology Group Inter-Corporate Licensing, London, GB;
Abstract
In a telecommunications system such as a global mobile telephone network in which each subscriber unit includes a Subscriber Identity Module (SIM card), each SIM card has fixed memory locations ( ), to which data can be addressed over the air. Some of the locations ( ) can not be overwritten from the subscriber unit but can be accessed therefrom on the entry of short simple codes, each associated with one of the locations. Further fixed memory locations ( ) can be read over the air only when the subscriber enters a personal identification number. Locking control files ( ) are used to control read/write access to the locations ( ) respectively.