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:
Aug. 04, 2009
Filed:
Jan. 24, 2008
Applicants:
Windsor Wee Sun Hsu, San Jose, CA (US);
Xiaonan MA, Sunnyvale, CA (US);
Inventors:
Windsor Wee Sun Hsu, San Jose, CA (US);
Xiaonan Ma, Sunnyvale, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Files are encrypted and stored on a WORM media device along with their encryption keys, the binary values of which are stored as a combination of written and unwritten sectors in a key storage portion of the media. To shred a file, the associated key is destroyed simply by writing into the unwritten sectors that are associated with the key.
Sun Hsu, Windsor. (2009). System and method for logical shredding of data stored on worm media (U.S. Patent No. 7570560). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7570560
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