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:
Jan. 13, 2009
Filed:
Nov. 22, 2004
Applicants:
Joshua Susser, San Francisco, CA (US);
Mitchel B. Butler, Sunnyvale, CA (US);
Andy Streich, Foster City, CA (US);
Inventors:
Joshua Susser, San Francisco, CA (US);
Mitchel B. Butler, Sunnyvale, CA (US);
Andy Streich, Foster City, CA (US);
Assignee:
Sun Microsystems, Inc., Palo Alto, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/455 (2006.01); G06F 9/46 (2006.01); G06F 9/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A small footprint device, such as a smart card, can securely run multiple programs from unrelated vendors by the inclusion of a context barrier isolating the execution of the programs. The context barrier performs security checks to see that principal and object are within the same namespace or memory space and to see that a requested action is appropriate for an object to be operated upon.