David Lee Cannon

US Patent:

7526621, Apr 28, 2009

Filed:

Aug 18, 2006

Appl. No.:

11/465630

Inventors:

Alan L. Stuart - Scarsdale NY, US
Toby Lyn Marek - Santa Clara CA, US
Avishai Haim Hochberg - San Jose CA, US
David Maxwell Cannon - Tucson AZ, US
Howard Newton Martin - Vail AZ, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00

US Classification:

711159, 711133, 711134, 711154, 711161, 707102

Abstract:

Provided are a method, system, and program for receiving a request to remove a record. A determination is made as to whether a state associated with the record includes at least one hold state and whether the state associated with the record includes at least a retention period that has not expired. The request to remove the record is denied in response to determining that the state associated with the record includes at least one of at least one hold state and one retention period that has not expired.

US Patent:

8281087, Oct 2, 2012

Filed:

Jan 7, 2009

Appl. No.:

12/350198

Inventors:

Alan Stuart - Scarsdale NY, US
Toby Lyn Marek - Santa Clara CA, US
Avishai Haim Hochberg - San Jose CA, US
David Maxwell Cannon - Tucson AZ, US
Howard Newton Martin - Vail AZ, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

G06F 12/00

US Classification:

711159, 711160, 711161, 711133, 711134, 711154, 707662, 707666

Abstract:

Provided are a method, system, and program for receiving a request to remove a record. A determination is made as to whether a state associated with the record includes at least one hold state and whether the state associated with the record includes at least a retention period that has not expired. The request to remove the record is denied in response to determining that the state associated with the record includes at least one of at least one hold state and one retention period that has not expired.

US Patent:

8583881, Nov 12, 2013

Filed:

Oct 1, 2012

Appl. No.:

13/632454

Inventors:

Alan L. Stuart - Scarsdale NY, US
Toby Lyn Marek - Santa Clara CA, US
Avishai Haim Hochberg - San Jose CA, US
David Maxwell Cannon - Tucson AZ, US
Howard Newton Martin - Vail AZ, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

G06F 12/00

US Classification:

711159, 711154, 711156, 707662

Abstract:

A method and system for use in electronic data retention are provided. The method includes receiving, via electronic communication, a request indication indicating a request to delete, shred, purge, or remove a record from a data retention system; generating a determination, by a processor in response to instructions stored on a non-transitory storage medium, indicating that the record is associated with a hold indicator that is not based on a retention period; and sending, via electronic communication, a denial of the request in response to the determination indicating that the record is associated with a hold indicator that is not based on a retention period.

US Patent:

44972083, Feb 5, 1985

Filed:

Jun 23, 1983

Appl. No.:

6/507111

Inventors:

Tonis Oja - Scarsdale NY
Gary L. Petersen - Kingstown RI
David W. Cannon - Attleboro Falls MA

Assignee:

Matec, Inc. - Warwick RI

International Classification:

G01N 2900

US Classification:

73584

Abstract:

This invention is concerned with a method and apparatus for measuring the electro-kinetic properties of a liquid which may be a mixture such as a slurry of particles, or a dispersion of droplets. Electrodes are placed in the liquid and an apparatus is provided for applying an alternating electrical potential to these electrodes. The electric field from this alternating potential acts upon the charged elements in the liquid, resulting in the generation of sound at the frequency of the applied electrical potential. By placing a conventional acoustic transducer in a spaced relationship to the electrodes, the acoustic signal is detected and measured. The amplitude of the acoustical signal will be a function of the electro-kinetic properties of the particles or emulsion droplets in the liquid. In its preferred form, the electrodes that are placed in the liquid have a spacial separation of one-half wave length, or odd integer multiples of half wave length of the sound which they generate. Coupled to the receiving transducer is a receiver that will amplify the signal to convenient levels.