Arnold M Epstein

Author:

Arnold M. Epstein

ISBN #:

0801849179

Author:

Arnold M. Epstein

ISBN #:

0801848652

US Patent:

20050008163, Jan 13, 2005

Filed:

Jun 1, 2004

Appl. No.:

10/858827

Inventors:

Norbert Leser - Camden MA, US
Fajen Kyne - Winchester MA, US
Robert Morgan - North Andover MA, US
Christopher Barclay - Newton MA, US
Edward Gaudet - Hanover MA, US
James Schoonmaker - Arlington MA, US
Arnold Epstein - Sudbury MA, US
Michael Smith - Lexington MA, US

Assignee:

Liquid Machines, Inc. - Lexington MA

International Classification:

H04L009/00

US Classification:

380281000

Abstract:

In a network of intermittently-connected computers, a method and apparatus for maintaining and managing control over data objects authored, accessed, and altered by users in dynamic, distributed, and collaborative contexts. The invention method and apparatus attach to each data object an identification of a respective control policy. Each control policy comprises at least an indication of a subset of the users who may access the data object, an indication of the privileges granted to each subset of users able to access the data object, and an indication of a subset of users who may define or edit the control policy. The invention method and apparatus separate the management of the control policies of data objects from the creation and use of the data objects. The invention method and apparatus automate common policy changes, distribution of policy changes to the enforcement agents, and propagation of control policies to derivative works.

US Patent:

40218341, May 3, 1977

Filed:

Dec 31, 1975

Appl. No.:

5/645745

Inventors:

Arnold S. Epstein - Washington DC
Stewart Share - Brookeville MD
Roland A. Polimadei - Rockville MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01L 3112

US Classification:

357 19

Abstract:

An integrated optical signal communicating device associating an optical eguide for guiding a light wave with a light-emitting junction for emitting the light wave and a light-collecting junction for receiving at least a part of the light wave. The device utilizes the gallium aluminum arsenide alloy system in the fabrication of the waveguide, emitter and collector to produce a device with high radiation resistance.

US Patent:

40005054, Dec 28, 1976

Filed:

Aug 8, 1975

Appl. No.:

5/603212

Inventors:

Arnold S. Epstein - Washington DC
Stewart Share - Brookeville MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01L 2714

US Classification:

357 30

Abstract:

A semiconductor device comprising a first layer of semiconductor material ving a bulk region of p-type conductivity and an inversion surface of n-type conductivity which forms a p-n junction with said bulk region, a covering layer on said inversion surface of oxides of silicon in a thickness of about 20-50 angstroms, and metallic contacts placed over said oxide layer.