Walter L Stewart

US Patent:

6901519, May 31, 2005

Filed:

Nov 3, 2000

Appl. No.:

09/704790

Inventors:

Walter Mason Stewart - Potomac MD, US
Marcelo Carrera - Silver Spring MD, US
Robert G. Hook - Alexandria VA, US

Assignee:

Infobahn, Inc. - Potomac MD

International Classification:

G06F011/30

US Classification:

713201, 709206, 709207

Abstract:

A network is protected from e-mail viruses through the use of a sacrificial server. Any executable programs or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipient. The sacrificial server is then checked for virus activity. After the execution is completed, the sacrificial server is rebooted.

US Patent:

7506155, Mar 17, 2009

Filed:

May 31, 2005

Appl. No.:

11/140464

Inventors:

Walter Mason Stewart - Potomac MD, US
Marcelo Carrera - Silver Spring MD, US
Robert G. Hook - Alexandria VA, US

Assignee:

Gatekeeper LLC - Leesburg VA

International Classification:

H04L 9/00

US Classification:

713152, 713151, 713150

Abstract:

A network is protected from e-mail viruses through the use of a sacrificial server. Any executable programs or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipient. The sacrificial server is then checked for virus activity. After the execution is completed, the sacrificial server is rebooted.

US Patent:

7913078, Mar 22, 2011

Filed:

Jan 9, 2007

Appl. No.:

11/650561

Inventors:

Walter Mason Stewart - Potomac MD, US
Marcelo Carrera - Silver Spring MD, US
Robert G. Hook - Alexandria VA, US
Ronald Rust - Leesburg VA, US
Charles Shotton - Leesburg VA, US

International Classification:

H04L 9/00

US Classification:

713152, 713151, 713150, 726 22, 726 24

Abstract:

A network is protected from viruses through the use of a sacrificial server, which may be physical or virtual. Any executable programs or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipient. The sacrificial server is then checked for virus activity. After the execution is completed, the sacrificial server is rebooted.

US Patent:

7979691, Jul 12, 2011

Filed:

Feb 25, 2009

Appl. No.:

12/392768

Inventors:

Walter Mason Stewart - Potomac MD, US
Marcelo Carrera - Silver Spring MD, US
Robert G. Hook - Alexandria VA, US

Assignee:

Intellectual Ventures I LLC - Wilmington DE

International Classification:

H04L 9/00

US Classification:

713152, 713151, 713150, 726 22, 726 24

Abstract:

A network is protected from e-mail viruses through the use of a sacrificial server. Any executable program or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipient. The sacrificial server is then checked for virus activity. After the execution is completed, the sacrificial server is rebooted.

US Patent:

20110231669, Sep 22, 2011

Filed:

May 26, 2011

Appl. No.:

13/116308

Inventors:

Walter Mason Stewart - Potomac MD, US
Marcelo Carrera - Silver Spring MD, US
Robert G. Hook - Alexandria VA, US

Assignee:

Intellectual Ventures I LLC - Wilmington DE

International Classification:

G06F 21/00
H04L 9/00

US Classification:

713188, 726 24

Abstract:

A network is protected from e-mail viruses through the use of a sacrificial server. Any executable programs or other suspicious parts of incoming e-mail messages are forwarded to a sacrificial server, where they are converted to non-executable format such as Adobe Acrobat PDF and sent to the recipient. The sacrificial server is then checked for virus activity. After the execution is completed, the sacrificial server is rebooted.

US Patent:

48603520, Aug 22, 1989

Filed:

May 20, 1985

Appl. No.:

6/736093

Inventors:

Joel E. Laurance - Gaithersburg MD
Walter M. Stewart - Potomac MD

Assignee:

Satellite Financial Systems Corporation - Gaithersburg MD

International Classification:

H04K 900

US Classification:

380 23

Abstract:

A satellite communications system apparatus and method for authenticating data transmissions uses the position of the transmitter, which position is determined by the satellite communications system. The transmitter position information is appended to the message (which can be either clear text or encrypted), which is sent to the receiver at a second location by the satellite system. A receiver can then authenticate the received message by comparing the received transmitter position with stored transmitter position information. The mobile transceiver syncing versions of the present invention allow the transceiver to be mobile, as opposed to being stationary. In this mobile version, each succeeding message is encrypted using the previous position of the mobile transceiver. Examples of transceivers implementing the apparatus and method of the present invention are shown, as are the specific vertical market applications of financial networks and automatic weather observation and reporting systems. In each version of the present invention, the determination of the location of the transmitter for each message that is received introduces an independently verifiable authentication parameter.

US Patent:

58094830, Sep 15, 1998

Filed:

Nov 14, 1997

Appl. No.:

8/970435

Inventors:

S. William Broka - Alexandria VA
Michael P. Walsh - Pleasantville NY
Deborah M. Clowney - New York NY
Walter E. Stewart - Jersey City NJ
Daniel R. DiSisto - Easton CT
Beth E. Weimer - Rockville MD
Eugene A. Callan - Campbell Hall NY
Robert N. Reiss - Potomac MD
Mark D. DuMont - Glen Ridge NJ

International Classification:

G06F 1760

US Classification:

705 37

Abstract:

A system for monitoring information about debt securities and reporting trades in the debt securities market. The system includes user stations and a host processor. Users input data requests and trade information to the user stations which transmit the requests and trade information to the host processor. The host processor processes information about the trades and requests for information using databases which contain various types of information about the debt securities and users. The host processor transmits processed trade information and requested information to the user stations which present the information to the users.

US Patent:

44736932, Sep 25, 1984

Filed:

Aug 4, 1978

Appl. No.:

5/931273

Inventors:

Walter W. Stewart - Bethesda MD

International Classification:

C07D22114
G01N 3316
G01N 130

US Classification:

546100

Abstract:

Fluorescent yellow dyes of the aminonaphthalimide type which have the following structures: ##STR1## In the formula above alk (alkali metal) may be substituted for Li. sup. + and thus alk may be Li. sup. +, Na. sup. +, or K. sup. +, but the preferable structure is Li. sup. +. These dyes have shown superior activity in intracellular use in vivo in tissues such as turtle retina and wholemount tissue observation.