Source: http://patents.com/us-5988510.html
Timestamp: 2019-02-20 09:06:30
Document Index: 340614510

Matched Legal Cases: ['application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08']

US Patent # 5,988,510. Tamper resistant smart card and method of protecting data in a smart card - Patents.com
United States Patent 5,988,510
Tuttle , et al. November 23, 1999
Inventors: Tuttle; John R. (Boise, ID), Wood, Jr.; Clifton W. (Boise, ID), McCabe; Arthur Barney (Albuquerque, NM)
Appl. No.: 08/800,037
Current U.S. Class: 235/492 ; 235/380
Current International Class: G06K 19/073 (20060101); G06K 019/06 (); G06K 005/00 ()
Field of Search: 235/492,380
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Assistant Examiner: Sherr; Daniel
Referring to FIG. 12, the sheet or panel 148 (which supports a plurality of substrates 18), undergoes further processing in which an amount of adhesive material 160 is applied around a perimeter edge of the sheet or panel. In the illustrated example, the sheet or panel 148 defines an 18.times.24 inch perimeter around which the adhesive material is applied. Such applied adhesive material forms a dam relative to and inside of which encapsulating epoxy material is to be formed. Subsequently, encapsulating epoxy material is formed over the sheet 148 to encapsulate each of the substrates 108 to cover the integrated circuits and batteries, and conductive traces and to define a second housing portion for each of the smart cards 100. In the illustrated embodiment, such epoxy constitutes a two-part epoxy having a resin and a hardener which are sufficient to provide a desired degree of flexible rigidity. After application and curing of such epoxy, the sheet or panel 148 is subjected to suitable separation or singulation processing in which individual smart cards 100 are cut and separated from one another. An exemplary separation process employs water jet cutting which suitably separates individual devices. Other methods of separating the smart cards 100 from each other can be employed. For example, the smart cards 100 can be separated by mechanical cutting.
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