Patrick J Larroche

US Patent:

7914870, Mar 29, 2011

Filed:

Nov 13, 2007

Appl. No.:

11/983960

Inventors:

Patrick Larroche - New York NY, US

Assignee:

FDD Technologies sa/ag, Ltd. - Zug

International Classification:

B32B 3/02

US Classification:

428 641, 428 644, 43027011

Abstract:

A limited-life storage medium comprises a flowable agent. In one example, the storage medium is an optical disc. In a ready-to-read condition, the center of mass of the disc does not coincide with the center of rotation. When the disc is read, the unbalanced rotation of the disc causes vibration that migrates the flowable agent into contact with a metal data-carrying layer, where the flowable agent interferes with the readability of the data so as to limit the useful life of the disc. The movement of the flowable agent improves the balance of the disc, and reduces the vibration.

US Patent:

20050195728, Sep 8, 2005

Filed:

Mar 2, 2004

Appl. No.:

10/792260

Inventors:

Patrick Larroche - New York NY, US

Assignee:

FDD Technologies sa/ag/ltd - Zug

International Classification:

G11B007/24

US Classification:

369275100, 369053210

Abstract:

An optical disc or other data storage medium has a substrate supporting a data storage region for storing readable data, and is caused to spin or is otherwise subjected to motion when read. A reservoir attached to the substrate and located in proximity to the data storage region stores a liquid reagent by liquid surface phenomena. When the medium is moved in order to read it, the centrifugal or other force causes the reagent to flow from the reservoir to interact with the data storage medium and interfere with the readability of the data.

US Patent:

20080120612, May 22, 2008

Filed:

Nov 13, 2007

Appl. No.:

11/985197

Inventors:

Patrick Larroche - New York NY, US

Assignee:

FDD Technologies sa/ag/ltd - Zug

International Classification:

G06F 9/445

US Classification:

717174

Abstract:

A storage medium contains information including a setup program comprising instructions for causing a computing device to install other parts of the information on the computing device. In normal use, reading the storage medium causes at least a selected part of the information on the storage medium to become unreadable within a predetermined time. The computing device reads the selected part of the information both before and after the predetermined time. The setup program installs the other parts of the information only if the selected part of the information is both readable before the predetermined time and unreadable after the predetermined time.

US Patent:

20080120634, May 22, 2008

Filed:

Nov 13, 2007

Appl. No.:

11/985179

Inventors:

Patrick Larroche - New York NY, US

Assignee:

FDD Technologies sa/ag/ltd - Zug

International Classification:

G11B 7/24
G11B 23/03

US Classification:

720718

Abstract:

A limited-life storage medium comprises a flowable agent. The flowable agent comprises water and a hygroscopic substance. In one example, the flowable agent is a mixture of glycol and water with an acid or other corrosive active ingredient dissolved in it. In one example, the storage medium is an optical disc. When the disc is read, the rotation of the disc propels the flowable agent into contact with a metal data-carrying layer. In one example, the hygroscopic substance reduces any tendency of the flowable agent to dry out and cease to be flowable, and may tend to buffer the proportion of water in the flowable medium within a range.

US Patent:

6468619, Oct 22, 2002

Filed:

Oct 30, 2000

Appl. No.:

09/699903

Inventors:

Patrick Larroche - New York NY 10025

International Classification:

B32B 302

US Classification:

428 641, 428 644, 43027012

Abstract:

Optical storage media with limited useful life include a substrate having a data storage portion containing readable data. A reservoir associated with the substrate releasably retains a preselected chemical agent that interacts with the data storage portion to render it unreadable a preselected period of time after the chemical agent is released. Alternatively, the invention includes an optical storage medium including a substrate supporting a metallic data storage layer for storing optically readable data, a reservoir located in proximity to the data storage layer for storing a chemical agent in contact with the data storage layer on a first side of the reservoir, and a flexible metallic lamina in contact with the chemical agent on an opposite side of the reservoir. A nonconductive member is located intermediate the data storage layer and the lamina for holding apart the data storage layer and the lamina, and has at least a portion through which the lamina can be deformed and come into contact with the data storage layer to complete a voltaic circuit from the data storage layer through the chemical agent to the lamina. Opening the storage container releases the chemical agent or completes the voltaic circuit, and starts the interaction with the optical storage medium, which will become unreadable after a preselected period of time.